JP2017536747A - Communication between devices in a neighbor aware network - Google Patents

Abstract

In some examples, the method includes, at a first device, a first device during a particular time period that is configured to operate devices in a neighbor aware network (NAN) data link group in an active mode of operation. Generating a paging message that includes an indication of whether is available. The method also includes sending a message from the first device to one or more devices in the data link group of the NAN.

Description

Priority claim
[0001] This application is a US provisional patent application of the same owner entitled “COMMUNICATION BETWEEN DEVICES OF A DATA PATH OF A NEIGBOR AWARE NETWORK” (Attorney Docket No. 147235P1) filed on October 16, 2014. No. 62 / 064,904, US Provisional Patent Application No. 62 / 109,530 entitled “COMMUNICATION BETWEEN DEVICES OF A NEIGBOR AWARE NETWORK” (Attorney Docket No. 147235P2) filed on January 29, 2015, "COMMUNICATION BETWEEN DEVICES OF A NEIGHBOR AWARE NETWORK" (Attorney) filed on August 14, 2015 US Provisional Patent Application No. 62 / 205,472 entitled “Sci. Priority is claimed on US Patent Application No. 14 / 883,469, the entire contents of each of the foregoing applications being expressly incorporated herein by reference.

  [0002] The present disclosure relates generally to communication between devices in a neighbor aware network (NAN).

  [0003] Advances in technology have resulted in smaller and more powerful computing devices. For example, there are currently a variety of portable personal computing devices, including wireless computing devices such as portable wireless phones, personal digital assistants (PDAs), and paging devices that are small and light and easy to carry by users. More specifically, portable wireless phones, such as cellular phones and Internet Protocol (IP) phones, can communicate voice and data packets over a wireless network. In addition, many such wireless telephones include other types of devices that are built-in. For example, a wireless telephone may include a digital still camera, a digital video camera, a digital recorder, and an audio file player. In addition, such wireless phones can process executable instructions, including software applications such as web browser applications that can be used to access the Internet. Thus, these wireless phones can include significant computing capabilities.

  [0004] Electronic devices, such as wireless telephones, may access a network using a wireless connection to send and receive data or exchange information. For example, mobile electronic devices in close proximity to each other may form an infrastructureless peer-to-peer wireless network, such as a mesh network, to perform data exchange over the wireless network. Data exchange is performed without involving wireless carriers, Wi-Fi access points, and / or the Internet. In order for a wireless network to function, a specific wireless channel may be reserved for transferring data between electronic devices of the wireless network. For example, a first electronic device in a wireless network may share a service, such as a music service, with other electronic devices in the wireless network. As an example, a first electronic device may transmit music data to a second electronic device in a wireless network. Messaging traffic, such as polling messages associated with the first electronic device that determines whether the second electronic device is available to receive music data, may consume network bandwidth. In addition, messaging traffic, such as an acknowledgment message associated with a second electronic device that provides an availability indication for receiving music data, may consume network bandwidth.

  [0005] The present disclosure is directed to systems and methods for providing an indication of availability for communication in a neighbor aware network (NAN). For example, during the association phase of NAN communication, including the exchange of device capability information, the device may provide availability information for subsequent communication at the NAN. Alternatively, the device may provide availability information for subsequent communications at the NAN during the NAN discovery window. In this case, the devices may not exchange device capability information during the association phase. Further, the device may use availability information received during the NAN discovery window to determine whether to associate with a particular NAN. In some cases, messaging traffic may be reduced at the NAN based on availability information. For example, messaging traffic may be reduced during a paging window and / or a data window.

  [0006] As an illustrative example, during the association phase of NAN communication (or during a NAN discovery window), the first device is a subsequent data window of the data link group of the second device NAN. Availability information may be received from the second device that provides an indication that it is available to communicate during. The first device may be referred to as the provider device and the second device may be referred to as the subscriber device. In response to receiving the availability information, the first device includes a traffic indication message (also referred to as a traffic indicator, which may include a traffic indication map (TIM)) that identifies the second device as the recipient of the data. When sending a paging message (during the paging window), the first device does not wait to receive an indication that the second device is available or the availability of the second device Send data to the second device during the data window based on availability information indicating the availability of the second device during the data window without determining (eg, via a mechanism such as PS-POLL) Can do. In this example, polling message traffic and ACK message traffic at the NAN may be reduced. In addition, if the device indicates that the device is “always available” via a capability exchange during the association phase, the transmitter refrains from sending a PS-POLL message for each data frame. obtain. Rather, the data frames may be aggregated for each aggregated Mac protocol data unit (A-MPDU). In some systems, the transmitter determines the availability of the receiver before transmitting each data frame (ie, not just for the first frame). In such a system, the transmitter sends a PS-POLL message and the receiver sends an ACK to the transmitter before the transmitter sends an MPDU. In this disclosure, such a PS-POLL / ACK scheme is deleted if the receiver indicates (during the NAN association phase) that the receiver is available during the data window of the data link group of the NAN. Can be done.

  [0007] As another illustrative example, during the association phase of NAN communication (or during the NAN discovery window), the first device is a subsequent device of the data link group of the NAN. Availability information may be sent to the second device that provides an indication that it is available to communicate during the data window. The first device may be referred to as a subscriber device and the second device may be referred to as a provider device. The first device may receive a paging message from the second device that includes a TIM that identifies the first device as a recipient of the data. The first device may receive data from the second device during the data window without responding to the paging message. In this example, polling message traffic and ACK message traffic at the NAN may be reduced.

  [0008] This disclosure also allows electronic devices in a data link group of a neighbor aware network (NAN) to provide an indication of availability or unavailability for "future" channels. Intended for systems and methods. As further described herein, a future channel may refer to a logical channel that follows the first logical channel in the logical channel index. In some cases, the availability indication may allow the provider device to refrain from providing traffic announcements during a particular time period. Instead of providing future traffic announcements, the provider device may perform data transmission. In other cases, the unavailability indication may allow the subscriber device to refrain from monitoring subsequent logical channels. Instead of monitoring subsequent logical channels, the subscriber device may transition to a low power mode of operation, such as sleep mode, or perform operations associated with other data link groups.

  [0009] The present disclosure is further directed to systems and methods for enabling electronic devices in a data link group of a NAN to perform data transmission during a paging window portion of a transmission window. For example, in some cases, one or more contention window parameters may be adjusted such that paging messages during the paging window portion of the send window are given priority. In such a case, the transmission of the paging message may end before the paging window boundary (PWB). Thus, data transmission can begin before the PWB and also during the data transmission portion of the transmission window. In other cases, the transmission window may include a trigger window portion that separates the transmission window into a paging window portion and a data transmission portion. One or more contention window parameters may be adjusted such that an acknowledgment, such as a trigger message, is given higher priority than data transmission. In some cases, the provider device may receive an acknowledgment (ACK) from each of one or more subscriber devices prior to a trigger window boundary (TrWB). Thus, the provider device may initiate data transmission before TrWB and also during the data transmission portion of the transmission window.

  [0010] The present disclosure further relates to a system, apparatus, and method for enabling devices in a data link group of a NAN to send a paging message to indicate upcoming scheduled traffic. The paging message includes a specific receiver address. Data link group devices may identify messages that include a particular receiver address value as a paging message. To illustrate, a first device may have traffic scheduled for transmission to a subset of devices in a data link group, and the first device sends a paging message to at least one other device in the data link group. May be sent. The paging message may include a plurality of fields including a receiver address field having a specific value. The particular value may be a value stored in the device's memory during production, or a value corresponding to a NAN or data link group, such as a NAN cluster identifier (ID) or data link group ID. The device receiving the message may first process the receiver address field (not the other part) of the message to determine whether the received message is a paging message. Since the paging message has a specific value for the receiver address field, the device receiving the message processes the rest of the message (or the rest of the message header) by processing the portion of the message that contains the receiver address field. Can be determined quickly and reliably whether the message is a paging message.

  [0011] If the receiver address field of the received message matches a particular value, the one or more devices determine that the received message is a paging message. In response to receiving the paging message, the one or more devices may send an acknowledgment (ACK) to the first device. The one or more devices may send an ACK to the first device before determining whether each device is included in the subset of devices indicated by the paging message. In some implementations, devices that are not part of the data link group may send an ACK based on confirming a particular value in the receiver address field. Since any device capable of recognizing a specific value of the receiver address can send an ACK, the probability that the first device will receive the ACK increases. In response to receiving at least one ACK, the first device determines that the paging message has been successfully transmitted.

  [0012] After processing the portion of the paging message that includes the receiver address field, if the receiver address field has a particular value, the second device determines whether the second device is included in the subset of devices. The paging message may continue to be processed to determine. The subset of devices may be indicated by a paged device list (representation of paged devices) included in the paging message. If the second device is included in the subset of devices, the second device may send a trigger frame to the first device. The trigger frame may include a quality of service null (QoS_NULL) frame or a power saving poll (PS_POLL) frame formed according to a wireless communication standard such as the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard. The trigger frame indicates that the second device is scheduled to be in an active mode of operation during the upcoming transmission window corresponding to the paging message. In response to receiving the trigger frame, the first device may transmit a portion of the data to the second device during the transmission window. In some implementations, contention mitigation techniques may be performed by data link group devices to reduce collisions between ACKs and trigger frames. In addition, in some implementations, the paging message includes additional information. For example, the paged device list control field in the paging message may include a traffic type indicator that identifies the type of data (eg, quality of service (QoS) type). As another example, the paging message may include a page control field that indicates the type of paged device list. Illustratively, the paged device list may include a list of traffic indication maps (TIM), bloom filters, or medium access control (MAC) addresses.

  [0013] As referred to herein, a data link group shares one or more electronic time periods that share a time period, such as a paging window corresponding to the active mode of operation of the electronic device, and have a common security certificate. Refers to the device. For example, the data link groups may form a wireless mesh network (eg, “social wireless fidelity (wi-fi) mesh”). As another example, data link groups may form an infrastructure-free peer-to-peer (p2p) network. A data link group may include each of the electronic devices in the NAN, or may include a subset of the electronic devices in the NAN.

  [0014] As referred to herein, a logical channel refers to a particular communication channel and one or more time periods during which electronic devices of the data link group can communicate for a particular service. A time period may include one or more transmission windows. Each transmission window may include a portion of time called a paging window, during which the first electronic device of the data link group has data to be transmitted by the first electronic device. The indicating paging message may be sent over one particular communication channel to one or more other electronic devices of the data link group. The remaining portion of the transmission window may be used to exchange data and may be referred to as a data transmission window.

  [0015] A data link group may be formed in response to the NAN provider device sending a message, such as an advertisement or announcement message, to the NAN electronic device during the discovery window. The message may indicate that the provider device is available to communicate over multiple logical channels. For example, a service advertisement may indicate that a particular service is available via multiple logical channels. As referred to herein, a discovery window refers to a time period corresponding to the active operating mode of a NAN electronic device. During the discovery window, the NAN's electronic device can listen (eg, monitor) a specific wireless channel, called a NAN communication channel, for service advertisements. The NAN subscriber device may respond to the service advertisement by sending a subscription message to the provider device.

  [0016] A particular data link group may correspond to a particular logical channel. For example, a particular data link group may include a provider device and one or more subscriber devices that have sent a join message indicating a particular logical channel. An electronic device of a particular data link group may monitor the communication channel of the corresponding logical channel during at least a portion of one or more paging windows associated with the logical channel.

  [0017] Each electronic device in the NAN may synchronize its internal clock based on a synchronization beacon received from at least one electronic device of the NAN. As the internal clock of each electronic device in the data link group is synchronized, each electronic device has a common time period, such as a discovery window, to transition to the active mode of operation and monitor the NAN communication channel for service advertisements. Can be determined. Each electronic device in the data link group may determine a common time period, such as a paging window, for transitioning to an active mode of operation and monitoring a particular communication channel corresponding to a particular logical channel for paging messages. In certain implementations, the data link group may be a “multi-hop” data link group, and the paging message is transmitted from the first electronic device of the data link group to another electronic device of the data link group during the paging window. May be sent to. In another specific implementation, the data link group may be a “single hop” data link group, and the paging message is sent via a specific logical channel by the provider device to one or more devices of the data link group. Can be sent.

  [0018] In certain aspects, a method of communication is available from a second device at a first device during a connection setup phase of Neighbor Awareness Network (NAN) communication or during a NAN discovery window. Receiving information. The connection setup phase includes the exchange of device capability information. The method also includes the first during the transmission window without performing a message exchange to determine the availability of the second device based on the availability information indicating the availability of the second device during the transmission window. Transmitting data from the device to the second device.

  [0019] In another aspect, an apparatus includes a processor and a memory coupled to the processor. The memory stores instructions that can be executed by the processor to perform various operations. These operations include receiving availability information from the device during the connection setup phase of neighbor aware network (NAN) communication or during the NAN discovery window. The connection setup phase includes the exchange of device capability information. The operation also includes transmitting data to the device during the transmission window without performing a message exchange to determine the availability of the device based on availability information indicating the availability of the device during the transmission window. .

  [0020] In another aspect, a non-transitory computer readable medium stores instructions executable by a processor to perform various operations. These operations may include receiving availability information from the device during the connection setup phase of Neighbor Awareness Network (NAN) communication or during the NAN discovery window. The connection setup phase includes the exchange of device capability information. The operation further includes transmitting data to the device during the transmission window without performing a message exchange to determine the availability of the device based on availability information indicating the availability of the device during the transmission window. .

  [0021] In another aspect, an apparatus includes means for receiving availability information from a device during a connection setup phase of neighbor aware network (NAN) communication or during a NAN discovery window. The connection setup phase includes the exchange of device capability information. The apparatus further transmits data to the device during the transmission window without performing a message exchange to determine the availability of the second device based on availability information indicating the availability of the device during the transmission window. Means for.

  [0022] In another aspect, a method of communication includes transmitting availability information from a first device to a second device during a connection setup phase of NAN communication or during a NAN discovery window. . The connection setup phase includes the exchange of device capability information, and the availability information indicates the availability of the first device during the transmission window. The method further includes, based on availability information indicating the availability of the first device during the transmission window, without performing a message exchange to provide an indication of availability to the second device during the transmission window. Receiving data at the first device from the two devices.

  [0023] In another aspect, a device includes a processor and a memory coupled to the processor. The memory stores instructions that are executable by the processor to perform various operations. These operations include sending availability information to the second device during the connection setup phase of the NAN communication or during the NAN discovery window. The connection setup phase includes the exchange of device capability information, and the availability information indicates the availability of the device during the transmission window. The operation may also be based on availability information indicating the availability of the device during the transmission window, without performing a message exchange to provide an indication of availability to the second device during the transmission window. Receiving data from.

  [0024] In another aspect, a non-transitory computer readable medium stores instructions executable by a processor to perform various operations. These operations may include sending availability information from the first device to the second device during the connection setup phase of the NAN communication or during the NAN discovery window. The connection setup phase includes the exchange of device capability information, and the availability information indicates the availability of the first device during the transmission window. The operation may also be based on availability information indicating the availability of the device during the transmission window, without performing a message exchange to provide an indication of availability to the second device during the transmission window. Receiving data from.

  [0025] In a further aspect, the device includes means for transmitting availability information to the second device during a connection setup phase of NAN communication or during a NAN discovery window. The connection setup phase includes the exchange of device capability information, and the availability information indicates the availability of the device during the transmission window. The device further provides data second during the transmission window based on availability information indicating the availability of the device during the transmission window without performing a message exchange to provide an indication of availability to the second device. Means for receiving from the device.

  [0026] In another aspect, a method of communication includes generating a paging message at a first device of a data link group of a neighbor aware network (NAN). The paging message includes a paged device list. The paged device list identifies a subset of devices in the data link group. The subset of devices is scheduled to receive data from the first device during the transmission window. The paging message includes a specific receiver address value. The method further includes transmitting a paging message to at least one device of the data link group other than the first device during the paging window.

  [0027] In another aspect, an apparatus includes a processor and a memory coupled to the processor. The memory stores instructions that are executable by the processor to perform operations including generating paging messages. The paging message includes a paged device list. The paged device list identifies a subset of devices in a neighbor aware network (NAN) data link group. A subset of devices are scheduled to receive data during the transmission window. The paging message includes a specific receiver address value. The operation further includes initiating transmission of a paging message to at least one device of the data link group during the paging window.

  [0028] In another aspect, an apparatus includes means for generating a paging message at a first device of a data link group of a neighbor aware network (NAN). The paging message includes a paged device list. The paged device list identifies a subset of devices in the data link group. The subset of devices is scheduled to receive data from the first device during the transmission window. The paging message includes a specific receiver address value. The apparatus further includes means for sending a paging message to a device other than the first device during the paging window.

  [0029] In another aspect, a non-transitory computer readable medium stores instructions that, when executed by a processor, cause the processor to generate a paging message at a first device of a data link group of a neighbor aware network (NAN). To do. The paging message includes a paged device list. The paged device list identifies a subset of devices in the data link group. The subset of devices is scheduled to receive data from the first device during the transmission window. The paging message includes a specific receiver address value. The instructions further cause the processor to begin sending paging messages to devices other than the first device during the paging window.

  [0030] In another aspect, a method of communication includes monitoring a wireless network during a paging window at a first device of a data link group of a neighbor aware network (NAN). The method further includes receiving, at the first device, a paging message from the second device of the data link group during the paging window. The paging message includes a paged device list. The paged device list identifies a subset of devices in the data link group. The subset of devices is scheduled to receive data from the second device during the transmission window. The paging message includes a specific receiver address value.

  [0031] In another aspect, an apparatus includes a processor and a memory coupled to the processor. The memory stores instructions that are executable by the processor to perform operations including monitoring the wireless network during a paging window. The operation further includes receiving a paging message from the second device of the data link group of the neighbor aware network (NAN) during the paging window. The paging message includes a paged device list. The paged device list identifies a subset of devices in the data link group. The subset of devices is scheduled to receive data from the second device during the transmission window. The paging message includes a specific receiver address value.

  [0032] In another aspect, an apparatus includes means for monitoring a wireless network during a paging window at a first device of a data link group of a neighbor aware network (NAN). The apparatus further includes means at the first device for receiving a paging message from the second device of the data link group during the paging window. The paging message includes a paged device list. The paged device list identifies a subset of devices in the data link group. The subset of devices is scheduled to receive data from the second device during the transmission window. The paging message includes a specific receiver address value.

  [0033] In another aspect, a non-transitory computer readable medium, when executed by a processor, causes the processor to establish a wireless network during a paging window at a first device of a data link group of a neighbor aware network (NAN). Stores instructions to be monitored. The instructions further cause the processor to receive a paging message at the first device from the second device of the data link group during the paging window. The paging message includes a paged device list. The paged device list identifies a subset of devices in the data link group. The subset of devices is scheduled to receive data from the second device during the transmission window. The paging message includes a specific receiver address value.

  [0034] In another aspect, a method of communication is performed during a specific time period in which a device of a data link group of a neighbor aware network (NAN) is configured to operate in an active mode of operation at a first device. Generating a message including an indication of whether the first device is available. As a non-limiting example, a particular time period may include a data link group paging window or a NAN discovery window. The method also includes sending a message from the first device to one or more devices in the data link group.

  [0035] In another aspect, an apparatus includes a processor and a memory coupled to the processor. Is the memory available to the first device during a particular time period that is configured such that the devices of the neighbor aware network (NAN) data link group operate in the active mode of operation? Stores instructions executable by the processor to perform operations including generating a message including an indication of whether or not. The operation also includes initiating transmission of a message from the first device to one or more devices in the data link group.

  [0036] In another aspect, a method of communication is performed at a second device of a data link group of a neighbor aware network (NAN) for a specific time period corresponding to a data link group or corresponding to a NAN. Receiving a message including an indication of whether the first device corresponding to the service is available. The method is also responsive to determining that the first device is unavailable during the particular time period during the one or more transmission windows corresponding to the particular time period. Including transitioning to a power operating mode.

  [0037] In another aspect, an apparatus includes a processor and a memory coupled to the processor. Memory is utilized by a first device corresponding to a specific service during a specific time period corresponding to a data link group or corresponding to a NAN in a second device of a data link group of a neighbor aware network (NAN) Stores instructions executable by the processor to perform operations including receiving a message including an indication of whether it is possible. The operation is also low during one or more transmission windows corresponding to that particular time period in response to the first device determining that it is unavailable during that particular time period. Including transitioning to a power operating mode.

  [0038] In another aspect, a method of communication may include a number of logical channels associated with a data link group of a neighbor aware network (NAN) at a provider device (eg, the next N referenced in a logical channel index). Generating an indication of unavailability for (logical channels). The method further includes transmitting a paging message from the provider device to one or more subscriber devices of the data link group of the NAN during the paging window portion of the transmission window.

  [0039] In another aspect, a method of communication includes, at a NAN data link group subscriber device, a number of logical channels associated with a data link group (eg, the next N referenced in the logical channel index). Receiving a paging message that includes an indication of provider device unavailability associated with a particular service for the logical channel. In some cases, the method also includes transitioning to a low power mode of operation during one or more transmission windows associated with the next N logical channels. In other cases, the method performs one or more operations associated with another provider device associated with another service during one or more transmission windows associated with the next N logical channels. Including doing. To illustrate, a provider device that provides an indication of unavailability may provide a first service (eg, a music service) and a subscriber device may provide a second device (eg, a game service) of another provider device. ). In this example, the subscriber device may perform one or more operations associated with the gaming service while the first service provider device is unavailable.

  [0040] In another aspect, a method of communication includes generating a paging message at a first device. The method further includes transmitting a paging message from the first device to one or more devices of a data link group of a neighbor aware network (NAN). The method also transmits a traffic announcement in a paging window corresponding to a particular time period in response to detecting one or more acknowledgments from each of the one or more devices at the first device. Refraining from doing so and sending data traffic before the beginning of the data window corresponding to that particular time period.

  [0041] In a further aspect, a method of communication monitors a specific communication channel corresponding to a data link group during a first time period at a second device of a data link group of a neighbor aware network (NAN). Including that. The method includes receiving a paging message at a second device from a first device corresponding to a particular service. The method includes transmitting an acknowledgment from the second device to the first device. The method includes monitoring at a second device a first logical channel identified by an index of a logical channel corresponding to a data link group. The method further includes receiving data traffic at the second device prior to the beginning of the data window corresponding to the next logical channel.

  [0042] In another aspect, a method of communication includes generating a paging message at a provider device during a paging window portion of a transmission window. The method includes sending a paging message from a provider device to one or more subscriber devices of a data link group of a neighbor aware network (NAN). The method further includes, at the provider device, whether one or more acknowledgments have been received from each of the one or more subscriber devices during the trigger window portion of the transmission window that follows the paging window portion of the transmission window. Including determining. In response to determining that one or more acknowledgments have been received, the method includes transmitting data traffic during at least a portion of the trigger window portion of the transmission window.

  [0043] In a further aspect, a method of communication monitors a particular logical channel of a plurality of logical channels associated with a data link group at a subscriber device of a data link group of a neighbor aware network (NAN). including. The method includes receiving a paging message at a subscriber device from a provider device associated with a particular service. A paging message is received during the paging window portion of the transmission window associated with a particular logical channel. The method also includes transmitting an acknowledgment from the subscriber device to the provider device during a trigger window portion of the transmission window that follows the paging window portion. The method further includes receiving data traffic from the provider device at the subscriber device during a trigger window portion of the transmission window and during a data traffic portion of the transmission window subsequent to the trigger window portion.

  [0044] One advantage of the present disclosure is the reduction of message traffic during the transmission window of the NAN based on availability information provided during the association phase of the NAN communication. The provider device refrains from performing a message exchange to determine the availability of the subscriber device when the subscriber device is providing availability indications (during the association phase) during the data window. Can reduce message traffic. Reducing message traffic may include reducing polling messages, responses to polling messages, trigger frames, or combinations thereof. In addition, the subscriber device is responsive to receiving a paging message that includes a traffic indicator that identifies the subscriber device as intended to receive data (eg, as the intended recipient of the data). Thus, it is possible to refrain from performing message exchanges to provide availability instructions to the provider device, resulting in a reduction in message traffic. Another advantage is the exchange of paging messages with a reduced processing load on the receiving device. For example, because the device receiving the message processes a portion of the message (including the receiver address) rather than a larger portion (or whole) of the message to determine whether the message is a paging message Consumption and processing power used by the device may be reduced. Illustratively, if the receiver address field of a NAN-related message does not have a specific value, the device receiving the message may discard the message without further processing.

  [0045] Other aspects, advantages, and features of the present disclosure are discussed throughout the entire application, including the following sections: Brief Description of the Drawings, Mode for Carrying Out the Invention, and Claims It will become clear after.

[0046] FIG. 7 is an illustration of certain aspects of a system that includes a neighbor aware network (NAN) that includes one or more devices included in a data link group corresponding to one or more logical channels. [0047] A table illustrating examples of logical channels. [0048] FIG. 2 is a timing diagram corresponding to the operation of certain aspects of the system of FIG. [0049] FIG. 2 is a timing diagram corresponding to the operation of certain aspects of the system of FIG. [0050] FIG. 2 is a timing diagram corresponding to the operation of certain aspects of the system of FIG. [0051] FIG. 2 is a timing diagram corresponding to the operation of certain aspects of the system of FIG. [0052] FIG. 2 is a timing diagram corresponding to the operation of certain aspects of the system of FIG. [0053] FIG. 2 is a timing diagram corresponding to the operation of certain aspects of the system of FIG. [0054] FIG. 4 is an illustration of certain aspects of a transmission window including a paging window boundary (PWB) that separates the paging portion of the transmission window from the data portion of the transmission window. [0055] FIG. 6 is a diagram of another aspect of a transmission window that includes a trigger window, separated from a paging portion of the transmission window by a paging window boundary (PWB) and separated from a data portion of the transmission window by a trigger window boundary (TrWB). [0056] FIG. 9 is an example service discovery frame including illustrative page attributes having a paged device list (PDL). [0057] A diagram of a second explanatory page attribute including PDL and an explanatory traffic announcement attribute including PDL. [0058] FIG. 2 is a flow diagram of a method of operation in a device of the system of FIG. [0059] FIG. 2 is a flow diagram of a method of operation in a device of the system of FIG. [0060] A flow diagram of a method of operation in a device of the system of FIG. [0061] FIG. 9 is a flow diagram of another method of operation in a device of the system of FIG. [0062] FIG. 9 is a flow diagram of another method of operation in a device of the system of FIG. [0063] FIG. 9 is a flow diagram of another method of operation in a device of the system of FIG. [0064] FIG. 8 is a flow diagram of another method of operation in a device of the system of FIG. [0065] FIG. 8 is a flow diagram of another method of operation in a device of the system of FIG. [0066] FIG. 9 is a flow diagram of another method of operation in a device of the system of FIG. [0067] FIG. 8 is a flow diagram of another method of operation in a device of the system of FIG. [0068] FIG. 9 is a flow diagram of another method of operation in a device of the system of FIG. [0069] FIG. 9 is a flow diagram of another method of operation in a device of the system of FIG. [0070] FIG. 9 is an illustration of a wireless device operable to support various aspects of one or more methods, systems, apparatuses, and / or computer-readable media disclosed herein.

  [0071] Certain aspects of the disclosure are described below with reference to the drawings. In the description, common features are designated by common reference numerals throughout the drawings.

  [0072] Referring to FIG. 1, certain aspects of a system 100 including a neighbor aware network (NAN) 102 are shown. The NAN 102 includes one or more devices 104, 106, 108, 110 (eg, electronic devices) that are configured to perform data exchange via wireless communication between the devices 104, 106, 108, 110. Including. Data exchange may be performed without involving wireless carriers, Wi-Fi access points, and / or the Internet. For example, the NAN 102 may include a first device 104, a second device 106, a third device 108, and a fourth device 110.

  [0073] The system 100 is shown for convenience only and the specific illustrated details are not limiting. For example, in other implementations, the system 100 may include more or fewer devices than those shown in FIG. 1, and the devices are located at different locations than those shown in FIG. There is. Devices 104, 106, 108, and / or 110 may include provider logic 130, subscriber logic 134, transceiver 136, or a combination thereof.

  [0074] Each of the devices 104, 106, 108, and / or 110 may be a fixed position device or a mobile device. For example, the devices 104, 106, 108, and / or 110 may be cell phones, laptop computers, tablet computers, personal computers, computerized watches, multimedia devices, peripheral devices, data storage devices, or combinations thereof. May or may correspond to them. In addition, or alternatively, devices 104, 106, 108, and / or 110 may be a processor (eg, a central processing unit (CPU), a digital signal processor (DSP), as further described with reference to FIG. ), Network processing unit (NPU), etc.), memory (eg, random access memory (RAM), read only memory (ROM), etc.) and one or more wireless networks such as one or more wireless communication channels. And a wireless interface configured to send and receive data over the network. The wireless interface may communicate with a transceiver 136 (eg, a wireless receiver and a wireless transmitter). Although some operations described herein may be described with respect to a “transceiver”, in other implementations a “receiver” may perform data reception operations and a “transmitter” May perform data transmission operations.

  [0075] The devices 104, 106, 108, 110 may exchange data and / or services via one or more wireless networks. As used herein, transmission “over” a wireless network may include, but is not limited to, a “point-to-point” transmission between two devices of a wireless network. As another example, transmission over a wireless network may include communications that are “broadcast” (eg, transmitted) from one particular device in the wireless network to multiple other devices in the wireless network. As used herein, devices 104, 106, 108, 110 are configured to operate according to one or more wireless protocols and / or standards, such as the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard. Can be done. For example, devices 104, 106, 108, and / or 110 may be IEEE 802.11a, b, g, n, s, aa, ac, ad, ae, af, ah, ai, aj, aq, ax, or mc. Can operate according to standards. In addition, devices 104, 106, 108, and / or 110 may operate according to one or more NAN standards or protocols.

  [0076] In addition, one or more of devices 104, 106, 108, and 110 may include a code division multiple access (CDMA) protocol, an orthogonal frequency division multiplexing (OFDM) protocol, an orthogonal frequency division multiple access (OFDMA) protocol. May be configured to communicate with a cellular network via one or more cellular communication protocols and / or standards, such as a time division multiple access (TDMA) protocol, a space division multiple access (SDMA) protocol, and the like. In addition, one or more of the devices 104, 106, 108, and 110 may be configured to operate in accordance with one or more near field communication standards, such as the Bluetooth® standard (Bluetooth is Bluetooth SIG, Inc., a registered trademark). In addition, one or more of devices 104, 106, 108, and 110 may exchange data via infrared communication or other near field communication.

  [0077] Each of the devices 104, 106, 108, and / or 110 may enter and exit the NAN 102 at various times during operation. For example, a device that is not in the NAN 102 may detect a discovery beacon and may connect to the NAN 102 during the discovery window specified by the discovery beacon according to the NAN standard or protocol. In addition, devices 104, 106, 108, and 110 can leave NAN 102 at any time. While in the NAN 102, the devices 104, 106, 108, and / or 110 are configured to send or receive a message indicating that they are available to communicate over one or more logical channels. Can be done. For example, service advertisements, such as service discovery frames (SDF), where devices 104, 106, 108, and / or 110 advertise services provided by at least one device of NAN 102 over one or more logical channels. May be configured to transmit or receive. In some implementations, the one or more logical channels may include multiple logical channels.

  [0078] Additionally, while in the NAN 102, the devices 104, 106, 108, and 110 are configured to send synchronization beacons to or receive synchronization beacons from one or more devices of the NAN 102. Can be done. A synchronization beacon may indicate synchronization information and may be formed according to one or more NAN standards or protocols. Each of devices 104, 106, 108, and 110 may be configured to synchronize their internal clocks based on a synchronization beacon. The synchronization beacon is in accordance with the NAN standard or protocol, in accordance with the NAN standard or protocol, in order to allow the synchronization beacon to reach devices outside the wireless communication range of the device transmitting the synchronization beacon, and May be retransmitted (eg, rebroadcast) by a portion of 110. In an exemplary implementation, synchronization beacons may be transmitted between devices of the NAN 102 via a first wireless channel referred to as a “NAN communication channel”. As referred to herein, a “NAN communication channel” is a specific wireless channel reserved for a device to perform NAN discovery and NAN synchronization operations. As used herein, a “NAN communication channel” is associated with the NAN 102 and communication in the NAN 102 may be performed (eg, through) the NAN communication channel.

  [0079] In addition to being included in the NAN 102, one or more of the devices 104, 106, 108, and 110 may be included in one or more data link groups. A data link group is a data link, data link network, group network, NAN data link (NDL), NDL network, data path group, data path group network, NAN data path, NAN data path group, or NAN data path group network. Can be called. In some implementations, the data link group may include, as a non-limiting example for illustration, such as “Social Wi-Fi® Mesh Network” or the Institute of Electrical and Electronics Engineers (IEEE) 802.11s mesh network. May include a mesh network. As another example, a data link group may include an infrastructureless peer to peer (p2p) network. A data link group may include multiple devices that can form a network, such as a distributed wireless network. In addition, each device in the data link group may share a data announcement type, a time period corresponding to a data announcement such as a paging window, or a combination thereof. In addition, each device in the data link group may use a shared security certificate. For example, security information such as a group key or a common network key may be shared between devices in a data link group using wireless communications that are in-band or out-of-band with respect to the group communication channel of the data link group. In some implementations, the devices in the data link group may be activated for each device to advertise services, receive traffic or other messages, or a combination thereof, etc. Can be synchronized to have a regular startup time.

  [0080] A data link group may correspond to a service provided via a particular logical channel by one of the devices 104, 106, 108, and 110. For example, as described herein, in FIG. 1, the first device 104 is connected to a particular logical channel such as a music service, game service, social media, advertising service, message sharing service, etc. Services may be provided to other devices in the data link group. As another example, the first device 104 may be part of another network, such as an access point (AP) based network or an independent basic service set (IBSS) network, The device 104 may be configured to advertise other networks to allow other devices of the NAN 102 to join the other network via the first device 104.

  [0081] Data link groups may include "single hop" data link groups or "multi-hop" data link groups. A single hop data link group may include one or more devices that are within the wireless communication range (eg, distance) of the device providing the service. A multi-hop data link group may include one or more devices that are outside the wireless coverage area of the provider. In a multi-hop data link group, at least one device can receive a message (including data) from a provider and can rebroadcast the message to another device outside the provider's wireless range. . In certain implementations, the data link group may be a multi-hop data link group that includes devices 104, 106, 108, and / or 110. In this implementation, wireless communication from the first device 104 to the fourth device 110 may be routed (eg, retransmitted) by the second device 106. In another specific implementation, the data link group may be a single hop data link group that includes devices 104, 106, and 108. Because the fourth device 110 is not within the wireless communication range, referred to as the first hop range of the first device 104, the fourth device 110 may not be included in the single hop data link group.

  [0082] The first device 104 may be configured to provide a service (eg, operate as a provider device). For example, the first device 104 can be configured to operate as a data source. The first device 104 can transmit data to other devices (eg, subscriber devices) in the data link group. For example, to share a music service, the first device 104 can send music data to another device in the data link group. As another example, to share social media services, the first device 104 can send text data, image data, video data, or a combination thereof to another device in the data link group. . As a further example, in order to share gaming services, the first device 104 may send text data, score data, image data, video data, or a combination thereof to another device in the data link group. it can. The subscriber device can be configured to operate as a data sink.

  [0083] In certain implementations, the provider logic 130 of the first device 104, the subscriber logic 134 of the second device 106, or both, the provider logic 130 sends the data 122 to the second device 106. A “capability exchange” may be performed before transmission. Capability exchange may be performed during the “connection setup” phase of NAN 102 communication. In some implementations, the connection setup phase may be the “association” phase of communication of the NAN 102. For example, FIG. 1 illustrates an association exchange 112 where the provider logic 130 of the first device 104 and the subscriber logic 134 of the second device 106 may perform a capability exchange by exchanging capability information 114 and availability information 116. Indicates that the association step includes. The association exchange 112 may further indicate the first communication information of the first device 104, the second communication information of the second device 106, or both. Illustratively, the first communication information and / or the second communication information may include security information (eg, a group key or a common network key). Although FIG. 1 shows an implementation in which availability information 116 is exchanged during the association phase, in an alternative implementation, availability information 116 may be exchanged during the NAN discovery window. In other implementations, the connection setup phase may include a “negotiation” phase of NAN 102 communication. During the negotiation phase, provider logic 130 of first device 104 and subscriber logic 134 of second device 106 may perform a capability exchange by exchanging capability information 114 and availability information 116. The negotiation phase can be similar to the association phase, except that the negotiation operation can be performed instead of the association operation.

  [0084] FIG. 1 illustrates a specific implementation in which capability information 114 is separated from availability information 116, but in alternative cases, availability information 116 may be included in capability information 114. Illustratively, during association, “capacity exchange” may include multiple parameters, and availability information 116 may be included as additional parameters. As a non-limiting example for illustration, availability information 116 may be a single bit, such as a value of 0 or a value of 1 in the “Availability” field of capability information 114. Alternatively, two or more bits can be used to provide more detailed information about availability. Illustratively, the availability information 116 may be a field that includes a plurality of bits and provides an indication corresponding to an “always” available status. To illustrate, multiple values of 0 may indicate a dedicated availability status, such as an “always available” status. As used herein, "dedicated" availability is such that a particular device's schedule monitors that particular device or group's communication at the time that the dedicated availability is indicated. Or something else devoted to that communication. In some implementations, as a NAN participant, a particular device may participate in multiple groups or communication sessions associated with the NAN, such as multiple data link groups, during a particular time frame. In such an implementation, “dedicated” availability for a particular session or group, such as a particular data link group of the NAN, means that a particular device is dedicated to a particular session or group at the time that dedicated availability is indicated. Indicates. The “always available” status is an example of a dedicated availability status. As another example, availability information 116 may provide an indication corresponding to a “preferred to be polled” status. Illustratively, multiple values of 1 may indicate a “preferred to be polled” status. As a further example, availability information 116 may provide an indication corresponding to a “preferred to send trigger frame” status. Illustratively, a combination of 0 and 1 in the field may indicate a “preferred to send trigger frame” status.

  [0085] FIG. 1 shows a particular illustrative implementation that represents two devices of the NAN 102 where the first device 104 and the second device 106 are “associated with each other”. For example, an association exchange 112 may be performed in which one of the devices 104, 106 attempts to join the NAN 102. When devices 104, 106 are associating, both devices 104, 106 indicate or exchange capabilities and whether devices 104, 106 are available "always" or devices 104, 106 are available It may indicate whether a trigger mechanism or a polling mechanism should be used to determine Illustratively, if the second device 106 is about to join the NAN 102 and the second device 106 is available “always” to communicate on this NAN 102, the second device 106 during the association phase The availability information 116 provided is for a transmitter, such as the first device 104, during which the transmitter 106, during the data window (as further described herein with respect to FIG. 3). May be instructed to refrain from polling. By refraining from polling, messaging traffic in the NAN 102 may be reduced.

  [0086] As another example, availability information 116 is second to a transmitter, such as first device 104, that second device 106 can use to receive data from the transmitter. An indication may be given that the transmitter may refrain from waiting for an acknowledgment (ACK) from device 106. Rather, during a paging window (as described further herein with respect to FIG. 3), the transmitter may send a traffic announcement identifying the second device 106 as a receiver, Data may be transmitted to the second device 106 without waiting for an ACK (during the data window) based on availability information 116 indicating the availability of the second device 106 in between. A traffic announcement may be a traffic indication message, also called a traffic indicator, which may include a traffic indication map (TIM). If the availability information 116 indicates that the second device 106 is available to receive data during the data window, the second device 106 transitions to a low power operating mode (or on another NAN). Instead of performing the action), it remains in the “wake” state for the data window.

  [0087] As another illustrative example, during association, availability information 116 provided by a device, such as second device 106, may indicate that the device is not available "always" or during a particular window. May indicate that the device “prefers” to be “polled” or “preferred” to send a trigger frame to determine availability for receiving data. Illustratively, in some cases, the second device 106 may be unavailable as a result of transitioning to a low power mode of operation or performing an operation on another NAN. Thus, the availability information 116 indicates that the second device 106 should be “polled” to provide an indication of availability, or that the second device 106 has a trigger frame to provide an indication of availability. To the first device 104 may be provided to the first device 104. In this case, as further described herein, the first device 104 may send a traffic indication message that identifies the second device 106 as a recipient of data (during the paging window). As used herein, an indication that identifies a device as a “recipient” of data is a device that is scheduled to receive data from another device (that device may receive some or all of the data). Point to instructions that identify (even if not yet received). Based on the availability information 116 provided by the second device 106, the first device 104 until the first device 104 determines the availability of the second device 106, such as via a polling frame or a trigger frame. It may refrain from sending data to the second device 106 (during the data window).

  [0088] In certain implementations, data may be transmitted between devices in a data link group via a second wireless channel, referred to as a "data link group" channel. As used herein, a “data link group channel” refers to a corresponding data link group for communicating messages such as paging messages related to sharing a service and communicating data associated with that service. A specific wireless channel reserved for the device inside. A logical channel may correspond to a data link group channel and one or more transmission windows. For example, data may be transmitted between devices in a data link group over a data link group channel during one or more transmission windows. As used herein, a “data link group channel” is associated with a data link group network, and communication in the data link group network may be performed through the data link group channel. In addition, the data link group channel can be used to share security information, to perform association operations, and to perform routing operations (in multi-hop data link groups).

  [0089] In some implementations, the data link group channel and the NAN communication channel may be different wireless channels corresponding to different wireless frequency bands. In one particular implementation, the NAN communication channel may be a 2.4 gigahertz (GHz) channel and the data link group channel may be a 5 GHz channel. In other implementations, the data link group channel and the NAN communication channel may be the same wireless channel. For example, one or more of the devices 104, 106, 108, 110 may share data with the data link group via the NAN 102 (eg, via a NAN communication channel). In some implementations, the NAN 102 may include multiple data link groups, and each of the multiple data link groups may correspond to a separate data link group channel. Multiple data link groups may correspond to different services provided by different devices in the NAN 102. In other implementations, multiple data link group devices may share data via the NAN 102. In some implementations, devices in multiple data link groups may share data over the same data link group channel during separate transmission windows.

  [0090] During operation, one of the devices of the NAN 102 may generate and transmit a sync beacon according to the NAN standard or protocol. For example, the third device 108 may send a synchronization beacon over a NAN communication channel. Any device within the one-hop range of the third device 108 may retransmit the synchronization beacon so that the synchronization beacon propagates throughout the NAN 102. Each of devices 104, 106, 108, 110 can receive a synchronization beacon and can perform a synchronization operation based on the synchronization beacon. For example, the devices 104, 106, 108, 110 can synchronize timing circuits, such as an internal clock, based on receiving a synchronization beacon.

  [0091] The first device 104 may begin to act as a provider device for a particular service to other devices in the NAN 102 after performing a synchronization operation, as described herein. Provider logic 130 of first device 104 may determine a first plurality of logical channels. For example, the provider logic 130 may determine the first plurality of logical channels based on default data, based on user input of the first device 104, or both. The first plurality of logical channels may correspond to a plurality of communication channels (eg, wireless communication channels) and one or more associated transmission windows, as described with reference to FIG. Provider logic 130 may determine a plurality of available logical channels. For example, the plurality of available logical channels is a subset of the first plurality of logical channels that are not used by the provider logic 130 of the first device 104, such as for joining other data provider groups. It can be.

  [0092] The provider logic 130 of the first device 104 may select one or more logical channels 150 from a plurality of available logical channels to provide a particular service. For example, the provider logic 130 of the first device 104 may select at least one of the logical channels 150 based on the latency sensitivity of a particular service, as described herein. As a non-limiting example, the particular service may be an audio streaming service, a game service, a music providing service, or a message service.

  [0093] In one particular example, the game service may have a first latency sensitivity, the message service may have a second latency sensitivity, and the first latency sensitivity is higher than the second latency sensitivity. Sometimes. The first logical channel of the plurality of available logical channels may include a first number of transmission windows, and the second logical channel of the plurality of available logical channels includes a second number of transmission windows. The second number may be greater than the first number. In this example, the provider logic 130 of the first device 104 is included for inclusion in the logical channel 150 in response to determining that the game service has a first latency sensitivity that meets a particular latency sensitivity threshold. A second logical channel may be selected. As another example, provider logic 130 of first device 104 includes logical channel 150 in response to determining that the message service has a second latency sensitivity that does not meet a particular latency sensitivity threshold. The first logical channel may be selected for this purpose.

  [0094] The provider logic 130 of the first device 104 may generate a message (eg, service advertisement 120) indicating that the first device 104 is available to communicate via the logical channel 150. . For example, the provider logic 130 may generate a service advertisement 120 to advertise the availability of a particular service. Service advertisement 120 may indicate logical channel 150. For example, service advertisement 120 may include a list of indexes corresponding to logical channels. The list of indexes may be based on mapping data that maps a particular index to each logical channel of logical channel 150. The mapping data may be available to one or more of the devices 104, 106, 108, and 110.

  [0095] In certain implementations, the first device 104 may provide specific services via a basic communication channel. The basic communication channel may correspond to the transmission window of the NAN channel starting after the end of the NAN discovery window, as further described below with respect to FIGS. In certain implementations, the service advertisement 120 may not indicate a basic communication channel. The subscriber logic 134 of a device, such as the second device 106, is responsive to the first device 104 in basic communication in response to receiving the service advertisement 120 regardless of whether the service advertisement 120 indicates a basic communication channel. It may be considered available to provide a particular service over the channel. Logical channel 150 may correspond to an auxiliary channel, also referred to as an auxiliary communication channel.

  [0096] The provider logic 130 of the first device 104 sends the transceiver 136 of the first device 104 to the devices of the NAN 102, such as the second device 106 and the third device 108, during the NAN discovery window. The service advertisement 120 may be transmitted through. Devices 104, 106, 108, and / or 110 may monitor the NAN channel during the NAN discovery window. One or more devices (eg, second device 106 and third device 108) may receive service advertisement 120 during the NAN discovery window.

  [0097] In certain implementations, the subscriber logic 134 of the second device 106 may generate the subscription message 124 in response to receiving the service advertisement 120. For example, the subscriber device 134 of the second device 106 has received the service advertisement 120 and is available for the second device 106 to communicate via at least one of the logical channels 150. In response to the determination, a join message 124 may be generated. Join message 124 may indicate implicitly or explicitly that second device 106 is available to communicate. The subscriber logic 134 of the second device 106 may send a subscription message 124 to the first device 104 via the transceiver 136 of the second device 106.

  [0098] The provider logic 130 of the first device 104 may receive the subscription message 124. The provider logic 130 of the first device 104 may determine that the second device 106 is available to communicate based on receiving the join message 124. In certain implementations, the join message 124 may explicitly indicate that the second device 106 is available to communicate. For example, the value of a particular field of join message 124 may indicate whether second device 106 is available to communicate. In this implementation, in response to the provider logic 130 of the first device 104 determining that a particular field of the subscription message 124 has a particular value (eg, 1), the second device 106 It can be determined that it is available to communicate. In an alternative implementation, the join message 124 may implicitly indicate that the second device 106 is available to communicate. In this implementation, the provider logic 130 of the first device 104 may determine that the second device 106 is available to communicate in response to receiving the join message 124.

  [0099] In certain implementations, the provider logic 130 of the first device 104 may send an acknowledgment (ACK) to the second device 106 in response to receiving the join message 124. In an alternative implementation, provider logic 130 may not send an ACK. For example, the handshake process between the first device 104 and the second device 106 may end when the provider logic 130 receives the join message 124.

  [0100] The data link group corresponding to each of the logical channels 150 may include a first device 104 and a second device 106. In certain implementations, the first device 104 may receive subscription messages from multiple subscriber devices, such as devices 106, 108, and / or 110. The data link group corresponding to a particular logical channel may include the first device 104 and each subscriber device that responded with a join message. The data link group corresponding to the basic communication channel may include the first device 104 and each subscriber device that responds with a subscription message to the service advertisement 120.

  [0101] Each data link group may correspond to a particular logical channel. For example, each data link group may correspond to a particular communication channel and one or more transmission windows. To illustrate, a data link group associated with a basic communication channel may correspond to a NAN communication channel and a transmission window starting at the end of the NAN discovery window, as further described with respect to FIG.

  [0102] Devices participating in a particular data link group may monitor a particular communication channel during the first portion of each of one or more transmission windows (eg, a paging window). For example, the first device 104 and the second device 106 may monitor the NAN communication channel during a paging window that ends when the NAN discovery window ends. As another example, the first device 104 and the second device 106 monitor a particular communication channel corresponding to each of the logical channels 150 during each paging window of one or more corresponding transmission windows. obtain.

  [0103] In certain implementations, devices participating in a data link group may monitor a corresponding communication channel during at least a first number of paging windows in each of one or more corresponding transmission windows. . For example, the first logical channel of logical channel 150 may correspond to the first communication channel and one or more transmission windows. The subscriber device 134 of the second device 106 may monitor the first communication channel for at least a first percentage (eg, 50%) of the paging window of one or more transmission windows. For example, the subscriber logic 134 of the second device 106 can monitor a first communication channel during a first paging window and monitor the first communication channel during a second paging window. I can refrain. The first paging window and the second paging window may occur during the same discovery period or during separate discovery periods. As referred to herein, a “discovery period” may refer to the time period between the end of the first discovery window and the beginning of the next discovery window.

  [0104] In the example shown in FIG. 1, the provider logic 130 of the first device 104 is responsive to determining that the first device 104 has data to be transmitted to the second device 106. A paging message 128 may be generated. The paging message 128 may indicate that the first device 104 has data to send to the second device 106. For example, the paging message 128 may indicate one or more recipients, such as the second device 106.

  [0105] The provider logic 130 of the first device 104 may transmit the paging message 128 over the first communication channel during the first paging window of the first transmission window. The provider logic 130 of the first device 104 may send the paging message 128 via the transceiver 136 of the first device 104. The first communication channel and the first transmission window may correspond to the first logical channel of logical channel 150. In certain implementations, the paging message 128 may include an ad-hoc traffic indication message (ATIM). For example, the paging message 128 may be transmitted during the ATIM window that is at the beginning of the first transmission window.

  [0106] In certain implementations, the paging message 128 may include an address list 160 indicating recipients. In some cases, address list 160 may be represented by a traffic indication map (TIM). A TIM may be a bitmap that indicates that a particular device is a recipient of data 122 to be transmitted. Each bit of the TIM may correspond to a different device in the data link group, and the value of each bit may indicate whether the corresponding device is a receiver of data 122. The association between the TIM bits and each device may be based on an association identifier (AID). For example, when the second device 106 can associate with the first device 104, the devices 104, 106 can generate and exchange AIDs. Illustratively, the second device 106 may associate with the first device 104 and may receive a first AID (eg, 2) from the first device 104. Devices 108 and 110 may receive separate AIDs (eg, 3 and 4 respectively) during association with the first device 104. The AID can be used by devices 106, 108, 110 to identify the corresponding bits in the TIM received from the first device 104. For example, the second bit of the TIM may correspond to the second device 106 due to an AID of 2. In this example, the third and fourth bits of the TIM may correspond to devices 108 and 110, respectively (the first bit of the TIM may be reserved).

  [0107] In some implementations, the paging message 128 includes a receiver address field with a specific receiver address value 170. A receiver address field having a particular receiver address value 170 may indicate to a device receiving the paging message 128 that the paging message 128 is a paging message as compared to a different type of message. In certain implementations, a particular receiver address value 170 is stored in the memory of devices 104, 106, 108, and 110. For example, a particular receiver address value 170 may be programmed or stored in the memory of devices 104, 106, 108, and 110 during manufacture and production. A particular receiver address value 170 may be common to each of devices 104, 106, 108, and 110. In some implementations, a particular receiver address value 170 may be defined in the NAN standard or other wireless communication standard. For example, a particular receiver address value 170 may be defined by the IEEE standard, the Wi-Fi Alliance® specification, or both. In other implementations, the particular receiver address value 170 may relate to a value that is determined during operation of the devices 104, 106, 108, and 110. As one non-limiting example, the particular receiver address value 170 can be a NAN cluster identifier (ID) for the NAN 102. As another non-limiting example, a particular receiver address value 170 can be a data link group ID for a data link group.

  [0108] A portion of paging message 128 after receiving paging message 128, each of devices 106, 108, and 110 includes a receiver address field for determining whether paging message 128 is a paging message. Can be processed. For example, the subscriber logic 134 of the devices 106, 108, and 110 may use a portion of the received message, such as a portion of a header or other portion, to determine whether the received message is a paging message. It can be configured to process. In some implementations, the receiver address field may be the first address field included in the paging message 128, and the devices 106, 108, and 110 process the paging message 128 up to the first address field. Can be configured as follows. In other implementations, the receiver address field may be a different address field, and the devices 106, 108, and 110 may be configured to process the paging message 128 up to the receiver address field. Processing that portion of the received message may include determining the value of the receiver address field and comparing the value to a particular receiver address value 170. If the receiver address field has a particular receiver address value 170, devices 106, 108, and 110 determine that the received message is a paging message (eg, paging message 128). If the receiver address field has a value different from the particular receiver address value 170, the devices 106, 108, and 110 determine that the received message is not a paging message. Because a small part of the received message is processed, determining whether the received message is a paging message is faster and more efficient than processing a larger part or the whole received message. It can be performed with a small amount of processing resources.

  [0109] In response to identifying the paging message 128 as a paging message, one or more of the devices 106, 108, and 110 may send an acknowledgment (ACK) 180 to the first device 104. For example, the second device 106, the third device 108, or both may send an ACK 180 to the first device 104. ACK 180 may be sent by a device that is not indicated as a recipient of data 122 by paging message 128. For example, the third device 108 may send an ACK 180 even though the third device 108 is not shown as a recipient of the data 122. To illustrate, the third device 108 may include a paging message that includes a receiver address field before processing other parts of the paging message 128 to determine whether the third device 108 is indicated as a recipient. 128 parts can be processed (and ACK 180 can be sent). In certain implementations, devices 106, 108, and 110 may be configured to transmit ACK 180 within a short interframe space (SIFS) period after receiving paging message 128. Since the device processes a small portion of the paging message 128 before transmitting the ACK 180, processing that portion of the paging message 128 and transmission of the ACK 180 may occur within the SIFS period.

  [0110] In some implementations, the first device 104 may receive multiple ACKs 180 from multiple devices in the data link group. In certain implementations, multiple devices generate multiple ACKs 180 based on the same scrambling seed. In this implementation, multiple ACKs 180 have the same waveform and are received as multipath transmissions at the first device 104. In another specific implementation, multiple devices generate multiple ACKs 180 based on different scrambling seeds. In this implementation, multiple devices may send multiple ACKs 180 within a SIFS period. Because multiple ACKs 180 are generated based on different scrambling seeds and transmitted simultaneously, the first device 104 is not capable of decoding multiple ACKs 180 due to interference caused by multiple ACKs 180 There is. In this case, the first device 104 may monitor the wireless network during the SIFS period to detect the level of transmitted energy corresponding to multiple ACK waveforms. Upon detecting a transmitted energy level that exceeds a threshold, the first device 104 may interpret the transmitted energy level as an indication that multiple ACK waveforms have been received.

  [0111] The paging message 128 may include or correspond to one or more frames. The frame may be defined in a wireless communication standard such as the IEEE 802.11 standard or the NAN standard. In some implementations, the paging message 128 includes a management frame or an action frame. As a non-limiting example, the action frame may include a public action frame. In other implementations, the paging message 128 includes a service discovery frame (SDF) that may also be referred to as a service announcement. The SDF may include an attribute 172 that includes information about the subset of devices, the type of traffic (eg, data 122) to be transmitted by the first device 104, and other information. The attribute 172 may be referred to as a “traffic notification attribute” or a “page attribute”. Although SDF is described as including attribute 172, in other implementations, paging message 128 may include other frames, such as management frames or action frames, and other frames may include attribute 172. is there.

  [0112] The attribute 172 includes a paged device list (PDL) 174. PDL 174 may identify a subset of devices that are scheduled to receive data 122 from first device 104. For example, the first device 104 may be configured to transmit data 122 to devices in the subset of devices during a portion of the transmission window. In some implementations, the paging message 128 includes the PDL 174 instead of the address list 160. In one particular implementation, PDL 174 is indicated by a TIM. In another specific implementation, PDL 174 is indicated by a Bloom filter. A Bloom filter is a data structure that indicates a member of a set without explicitly identifying the members of the set. In certain implementations, the data structure may be a sequence of bits. The Bloom filter may identify a subset of devices that are scheduled to receive the data 122. Since the Bloom filter is smaller than the TIM and may use less storage space, compared to using the TIM as the PDL 174, the power consumed to transmit the Bloom filter can be reduced, and the paging message 128 Can be reduced in size. A device may be indicated as a target for data 122 in a Bloom filter using a set of hash functions. For example, the Bloom filter may be an m-bit bit array initialized to a logical value of 0, and the Bloom filter may correspond to a set of hash functions. To indicate that a device is scheduled to receive data 122, a sequence of bits corresponding to that device may be passed through a hash function to generate a set of bit positions. Each bit in the Bloom filter corresponding to that set of bit positions is set to a logical value of one. In one particular implementation, the sequence of bits passed through the set of hash functions is the media access control (MAC) address of the device indicated as the target of data 122. The other device determines the corresponding set of bit positions based on the corresponding column of bits, such as the MAC address, and sets each bit in the Bloom filter corresponding to the set of bit positions to a logical value of 1 By doing so, it can be shown as the target of data 122. In another specific implementation, PDL 174 is indicated by a list of MAC addresses. Each device that receives the paging message 128 processes the PDL 174 to determine whether the corresponding device is included in the subset of devices that are scheduled to receive data 122 from the first device 104. Can be configured as follows.

  [0113] In some implementations, the PDL control field of attribute 172 includes a traffic type indicator. The traffic type indicator may identify the type of traffic corresponding to the data 122. For example, the traffic type indicator may specify whether the data 122 is voice data, video data, packet data, or other types of data. In certain implementations, the traffic type indicator may identify a quality of service (QoS) category of data 122. Multiple traffic type indicators may be used to indicate various types of data that are scheduled for transmission. As an example, the first device 104 may have two types of data to be transmitted to devices in the data link group. Since the first device 104 is scheduled to transmit multiple types of data, the paging message 128 includes multiple attributes. For example, if the first device 104 has two types of data that are scheduled for transmission, the paging message 128 includes a first attribute and a second attribute. Each of the two attributes may include a traffic type indicator (in the PDL control field) that indicates one of the types of data that are scheduled for transmission. For example, if the first device 104 has voice data and packet data that are scheduled to be transmitted, the first attribute may include a traffic type indicator that indicates voice data, and the second attribute may include packet data. A traffic type indicator may be included.

  [0114] In addition, the PDL control field may indicate the type of PDL 174. For example, a set of bits in a PDL control field having a first value may indicate that PDL 174 is indicated by a TIM, and a set of bits in a PDL control field having a second value may be indicated by a Bloom filter. The set of bits in the PDL control field having a third value may indicate that the PDL 174 is indicated by a list of MAC addresses. In addition, the set of bits in the PDL control field having the fourth value may indicate that a new common group key (CGK) corresponding to the data link group has been generated. If the set of bits in the PDL control field has a fourth value, the MAC address of the device that generated the CGK is included in the PDL 174. CGK may allow devices 104, 106, 108, and 110 to perform wireless communication over data link groups. For example, CGK may be used to encrypt and decrypt messages sent between devices in a data link group. In some implementations, the attribute 172 also includes a page control field 176. Page control field 176 may indicate the number of PDLs included in paging message 128. The page control field 176 may also indicate whether the data 122 scheduled for transmission is multicast data or unicast data. Additional details of attribute 172 and page control field 176 are described with reference to FIGS.

  [0115] Each of the devices 106, 108, and 110 receives the data 122 based on corresponding bits in the TIM (address list 160) or based on the PDL 174 received from the first device 104. Can be determined if is scheduled. For example, the second device 106 may determine that the second device 106 is scheduled to receive the data 122 based on the second bit of the TIM having a logical value of 1. , Devices 108 and 110 may determine that devices 108 and 110, respectively, are not scheduled to receive data 122 based on the third and fourth bits having a logical 0. it can. As another example, the second device 106 may determine that the second device 106 is scheduled to receive data based on the PDL 174, which may be a list of TIMs, Bloom filters, or MAC addresses. . Accordingly, the second device 106 can remain in an active mode of operation for the remainder of the first transmission window. The remaining portion may include a data transmission window. Illustratively, the subscriber logic 134 of the second device 106 may monitor the first communication channel during the data transmission window. In certain implementations, the subscriber logic 134 of the second device 106 (or the provider logic 130 of the first device 104) is configured to monitor the first communication channel during the data transmission window. The channel of the transceiver 136 of the second device 106 (or the first device 104) may be changed to the first communication channel.

  [0116] In certain implementations, the subscriber device 134 of the second device 106 has determined that the second device 106 is indicated by the paging message 128 as the recipient of the data 122 from the first device 104. Based on that, the trigger frame 182 may be transmitted to the first device 104 during the data transmission window. Trigger frame 182 may indicate that subscriber logic 134 of second device 106 is ready to receive data 122. For example, the trigger frame 182 may indicate that the second device 106 is scheduled to be in an active mode of operation during the transmission window. In certain implementations, a power saving poll (PS-POLL) message may act as the trigger frame 182. In certain implementations, the subscriber logic 134 of the second device 106 may send a PS-POLL message over the first communication channel during the first part of the data transmission window (eg, an acknowledgment window). Can be sent. In another particular implementation, a quality of service null (QoS_NULL) message may act as the trigger frame 182. In certain implementations, the traffic type of trigger frame 182 may be set to a high priority traffic type. For example, the QoS category corresponding to the trigger frame 182 may be set to a high priority category such as voice data. By setting the traffic type to the high priority type, the trigger frame 182 may be more likely to be transmitted, so that the high priority transmission is complete and the wireless network is free for trigger frame transmission. Reduce or eliminate the delay caused by the trigger frame being queued until In certain implementations, the second device 106 may receive a second paging message from a different device (not shown) in addition to the paging message 128. In this implementation, the second device 106 may multicast the trigger frame 182 to the first device 104 and a different device. In this way, a multicast trigger frame may be sent to multiple devices if the device is scheduled to receive traffic from multiple devices. By using multicast trigger frames, the number of trigger frames can be reduced, thereby reducing wireless network congestion.

  [0117] In certain implementations, the devices 104, 106, 108, and 110 are configured to perform contention mitigation techniques to reduce collisions between ACKs, between trigger frames, or both. Can be configured. In order to perform contention mitigation, each of devices 104, 106, 108, and 110 may include, store, and / or maintain one or more backoff counters. One or more backoff counters are used by devices 104, 106, 108, and 110 to determine when to start transmitting an ACK or trigger frame during a paging window (or transmission window). obtain. Illustratively, after receiving the paging message 128, the second device 106 and the third device 108 may set the backoff counter to a value that is randomly derived from a uniform distribution over the interval [0, CW]. Where CW is a contention window parameter. In some implementations, the CW has a certain value, such as a pre-programmed value or a value set by a wireless communication standard. In other implementations, the CW is based on the length of the paging window, as further described herein. In other implementations, a distribution parameter, such as a contention window parameter or another parameter, is used by one or more of the devices 104, 106, 108, 110 to distribute the ACK, or a trigger frame is used for the paging message. Indicated by. For example, the order of devices 104, 106, 108, 110 in PDL 174 or address list 160 may correspond to the CW for each device 104, 106, 108, 110. To illustrate, a device associated with a first location in the address list 160 may use a first CW, and a device associated with a second location in the address list 160 uses a second CW. (Where the second CW is different from the first CW), and so on. If the back-off counter at the second device 106 reaches zero, the second device 106 sends an ACK 180 to the first device 104. If the back-off counter at the third device 108 reaches 0, the third device 108 sends an ACK 180. In some implementations, if one of the second device 106 and the third device 108 has already sent an ACK 180, the other does not send an ACK 180. Alternatively, the second device 106 and the third device 108 may send ACKs 180 at different times based on different random values of the backoff counter. The backoff counter may be used in the same manner as described above for transmitting the trigger frame 182. In other implementations, more than one backoff counter may be used to further randomize the time at which an ACK or trigger frame is transmitted. Additional details and other implementations of performing contention mitigation are further described herein.

  [0118] In certain implementations, prior to sending the paging message 128, the first device 104 communicates to devices included in the subset of devices that are scheduled to receive data from the first device 104. , A first request to send (RTS) message 184 may be sent. For example, the first device 104 may send a first RTS message 184 to the second device 106 before sending the paging message 128. The second device 106 may send a first clear to send (CTS) message 186 to the first device 104 in response to receiving the first RTS message 184. The first CTS message 186 may be transmitted within a short interframe space (SIFS) period of receiving the first RTS message 184. Other devices in the data link group can detect the first RTS message 184, the first CTS message 186, or both over the wireless network, and the other devices can detect the first RTS message 184, In response to detecting the first CTS message 186, or both, data may be refrained from being transmitted over the wireless network for a particular time period. Accordingly, the first RTS message 184, the first CTS message 186, or both can “clear” the wireless network for transmission of the paging message 128. In response to receiving the first CTS message 186, the first device 104 may send a paging message 128 to the devices in the data link group. In certain implementations, the paging message 128 may include a second receiver address having a value that identifies the second device 106. In another specific implementation, the paging message 128 may include a multicast message that includes a second receiver address having a multicast address.

  [0119] In some situations, the second device 106 transmits the first CTS message 186 within the SIFS period, such as because other devices in the data link group have control of the wireless network. It may not be possible. If the first device 104 does not receive the first CTS message 186 within the SIFS period, the first device 104 may send a second RTS message 188 to a different device included in the subset of devices. For example, the first device 104 sends a second RTS message 188 to the third device 108 (if the third device 108 is included in the subset of devices) before sending the paging message 128. obtain. In response to receiving the second RTS message 188, the third device 108 may send a second CTS message 190 to the first device 104. In response to receiving the second CTS message 190, the first device 104 may send a paging message 128 to the devices in the data link group. In some implementations, the data 122 may be multicast data. In these implementations, the paging message 128 may include a multicast indicator. For example, the paging message 128 may include a specific field that indicates whether the data 122 is unicast data or multicast data. Multicast data may include data to be transmitted to multiple devices simultaneously, and may include broadcast data. In these implementations, the first device 104 may select any device in the data link group as the recipient of the first RTS message 184.

  [0120] The provider logic 130 of the first device 104 may receive a trigger frame 182 (PS-POLL message or QoS_NULL message) during the data transmission window. In response to receiving the trigger frame 182, the provider logic 130 of the first device 104 transmits data 122 to the second device 106 over the first communication channel during the data transmission window. obtain. In the example shown in FIG. 1, the paging message 128 further includes an availability or unavailability indication 162 for the next N logical channels 164. As will be described further below, one or more neighboring devices, such as the second device 106 subscribing to a particular service provided by the first device 104, based on the indication 162, 1 It may be determined whether one or more operations are to be performed.

  [0121] In certain implementations, the indication 162 included in the paging message 128 may represent an indication of the unavailability of the first device 104 for the next N logical channels 164. That is, as described further below with respect to FIG. 2, the paging message 128 shown in FIG. 1 may represent a “current” paging (traffic) announcement over the “current” logical channel and The indication 162 may represent a “future” logical channel that follows the “current” logical channel in the logical channel index for the particular data link group. Although referred to as a “current” logical channel and a “future” logical channel, a logical channel may be any logical channel referenced in the logical channel index. For example, as a non-limiting example, the “current” logical channel may refer to the first logical channel referenced in the logical channel index, and the “future” logical channel may be the second logical channel and the second logical channel. It may refer to one or more logical channels that follow the first logical channel in the index, such as three logical channels. To illustrate, the “current” logical channel may represent the first logical channel in the index, and the indication 162 specifies that the first device 104 is not available for the next four logical channels. (Ie, N = 4). In this example, the first device 104 may not be available from the first logical channel in the index to the fifth logical channel in the index, and the “future” logical channel is the second logical channel. Channel to fifth logical channel.

  [0122] In response to receiving the unavailability indication 162, the subscriber logic 134 of the second device 106 monitors the next N logical channels 164 of the logical channel 150 of the particular data link group. You can refrain from. In some cases, the second device 106 may reduce power consumption by staying in a low power mode of operation and may refrain from starting to monitor the next N logical channels 164 (including the paging window). . Alternatively, the second device 106 may perform one or more operations associated with another data link group. For example, if the second device 106 subscribes to multiple providers, the second device 106 schedules a power saving operation or a simultaneous operation based on the common portion of unavailability associated with each of the multiple providers. be able to. As a non-limiting example for illustration, the second device 106 may subscribe to two providers (eg, the first device 104 and another device). Depending on when both provider devices exhibit unavailability, the second device 106 can schedule a power saving operation or a simultaneous operation.

  [0123] In another implementation, the indication 162 included in the paging message 128 may represent an indication of the availability of the first device 104 for the next N logical channels 164. That is, as described further below with respect to FIG. 2, the paging message 128 shown in FIG. 1 may represent a paging (traffic) announcement over the first logical channel and the availability indication 162 may be specific May represent other logical channels following the first logical channel in the logical channel index for the data link group. As a non-limiting example for illustration, the first logical channel may represent the first logical channel in the index, and the indication 162 is used by the first device 104 for the next four logical channels. It can be specified that it is possible (ie N = 4). In this example, the first device 104 may be available from the first logical channel in the index to the fifth logical channel in the index.

  [0124] In response to receiving the availability indication 162, the subscriber logic 134 of the second device 106 may send an acknowledgment to the first device 104. The acknowledgment may be a PS-POLL message. If the first device 104 receives an acknowledgment from each of the subscriber devices, the first device 104 may not send a traffic announcement on the next N logical channels 164. Instead, the first device 104 may proceed to send data traffic. Thus, the availability indication 162 for the next N logical channels 164 can reduce the number of paging messages and associated acknowledgments (ACKs), and different time frequency blocks (eg, the next N logical channels 164). ) Over a long period of time. By announcing “future” availability, the first device 104 may not include a traffic announcement in the paging window for a time period corresponding to a subsequent logical channel. As further described with respect to FIG. 9, at least some paging windows that would normally be used for traffic announcements may instead be used to transmit data traffic. That is, for a transmission window that includes a paging window (PW) portion and a data portion, at least a portion of the time associated with the PW portion can be used for data transmission.

  [0125] In certain implementations, the indication 162 may identify availability via a first bit (eg, 1) and identify unavailability via a second bit (eg, 0). There are things to do. As a non-limiting example for illustration, the indication may include [1, N] to indicate that the first device 104 is available for the next N logical channels 164. Where N is an integer value. To indicate that the first device 104 is not available for the next N logical channels 164, the indication may include [0, N], where N is an integer value. However, it should be understood that alternative methods of identifying availability or unavailability can be used.

  [0126] Accordingly, FIG. 1 illustrates that during the association phase of NAN communication, devices may exchange availability information that provides an indication of availability for communicating during subsequent data windows. When a provider device identifies a subscriber device as a recipient of data, the provider device may send a paging message that includes a TIM that identifies the subscriber device as a recipient of data, Based on availability information indicating the availability of the subscriber device during the data window, data may be transmitted to the subscriber device during the data window without waiting for an ACK. For example, if the first device 104 identifies the second device 106 as a recipient of data, the first device 104 sends a paging message that includes a TIM based on availability information 116 without waiting for an ACK. Can do. Further, the subscriber device may refrain from providing an ACK to the provider device in response to a paging message that includes a traffic indicator that identifies the subscriber device. Accordingly, availability information 116 provided during the association phase of communication of NAN 102 may result in a reduction in polling message traffic and ACK message traffic in NAN 102.

  [0127] FIG. 1 further illustrates that devices in the data link group of the NAN 102 may provide an availability or non-availability indication for the next N logical channels via a paging message. In some cases, the availability indication refrains from providing a traffic announcement during a paging window (PW) portion of a subsequent transmission window, instead of a provider device, such as the first device 104, sending data instead. It may be possible to perform. As a specific example, during the paging window of the first transmission window, the provider device may send a paging message to one or more devices in the data link group. In this example, during the second transmission window (following the first transmission window) based on the availability indication from a particular subscriber device of the data link group, the provider device Data traffic may be sent to a particular subscriber device without sending a traffic announcement during the paging window. In some implementations, the provider device may transmit data traffic during a portion of the second transmission window other than the data window portion of the second transmission window. Illustratively, the provider device may transmit at least a portion of the data traffic during the paging window portion or the trigger window portion of the second transmission window.

  [0128] In other cases, an indication of unavailability may allow a subscriber device, such as second device 106, to refrain from monitoring subsequent logical channels. Instead, the subscriber device may transition to a low power operating mode (eg, sleep mode) or perform operations associated with other data link groups. In some implementations, the subscriber device determines whether other devices to which the subscriber device is peered are unavailable before transitioning to the low power mode of operation. For example, a subscriber device may be peered with two devices, such as through an association operation or a negotiation operation, and the subscriber device may enter a low power operation mode when both devices are unavailable. Transition is possible. FIG. 1 further illustrates that devices in the data link group of the NAN 102 may receive a paging message, such as a paging message 128 that includes a receiver address field with a particular receiver address value 170. Using a particular receiver address value 170, a device that receives the paging message 128 may identify the paging message 128 as a paging message by processing a portion of the paging message 128 that includes the receiver address field. Could be possible. Processing that portion may require less processing resources or may be performed faster than processing a larger portion or the whole of the paging message 128.

  [0129] Referring to FIG. 2, a table showing examples of logical channels is shown, designated generally as 200. Table 200 includes a NAN data link (NDL) index column 204, a channel number column 206, and an auxiliary channel offset column 208. In certain implementations, table 200 may be determined according to a NAN standard or protocol.

  [0130] Each row of table 200 may correspond to a particular logical channel. For example, row 210 may correspond to a first logical channel, such as basic communication channel 306 in FIG. Row 210 may indicate a first index (eg, 0), a first communication channel (eg, communication channel 6), and a first auxiliary channel offset (eg, 1). In certain implementations, the service advertisement 120 may include a first index to indicate the first logical channel of the logical channel 150. In an alternative implementation, the service advertisement 120 may not include the first index if the first index corresponds to the basic communication channel.

  [0131] In certain implementations, the provider logic 130 of the first device 104, the subscriber logic 134 of the second device 106, or both, to determine the auxiliary channel offset (eg, 16 TU) A specific number (eg, 16) can be multiplied by a first auxiliary channel offset (eg, 1). As described with reference to FIG. 1, the provider logic 130 of the first device 104, the subscriber logic 134 of the second device 106, or both may Later, it may be determined when the transmission window of the first logical channel starts.

  [0132] Row 212 may correspond to a first auxiliary channel, such as first auxiliary channel 308 of FIG. Row 212 includes a first index (eg, 3), a first communication channel (eg, communication channel 36), a first auxiliary channel offset (eg, 2), and a second auxiliary channel offset (eg, 18). Row 214 may correspond to a second auxiliary channel, such as second auxiliary channel 310 of FIG. Row 214 includes a second index (eg, 13), a second communication channel (eg, communication channel 149), a second auxiliary channel offset (eg, 9), and a third auxiliary channel offset (eg, 25).

  [0133] Each auxiliary channel offset may indicate a transmission window associated with the corresponding auxiliary channel. In certain implementations, the provider logic 130 of the first device 104 includes a first auxiliary channel and a second auxiliary channel to be included in the logical channel 150, as described with reference to FIG. You can choose. In this implementation, service advertisement 120 may include a first index and a second index.

  [0134] The provider logic 130 of the first device 104 may determine an index corresponding to a particular logical channel based on the table 200. The provider logic 130 of the first device 104 may include an index in the service advertisement 120 to indicate a particular logical channel. Service advertisement 120 may indicate an index using a certain number of bits. That particular number of bits to indicate the index may be “fixed”. For example, the particular number of bits may be independent of the number of auxiliary channel offsets corresponding to a particular logical channel. By using an index to indicate a particular logical channel, the size of the service advertisement 120 can also be reduced.

  [0135] Referring to FIG. 3, a timing diagram is shown, generally designated 300. In certain implementations, the timing diagram 300 may correspond to the operation of certain implementations of the system 100 of FIG. The timing and operations shown in FIG. 3 are for illustration and not limitation. In other implementations, additional or fewer operations may be performed and timing may be different.

  [0136] Timing diagram 300 includes an entire timeline 302 corresponding to NAN communication channel 304, basic communication channel 306, first auxiliary channel 308, and second auxiliary channel 310. Thus, multiple auxiliary communication channels can be used to transmit data. In alternative implementations, a single auxiliary communication channel may be used, or more than two auxiliary communication channels may be used.

  [0137] As shown in the timing diagram 300, the first discovery window 312 and the second discovery window 314 may correspond to the NAN communication channel 304. As described with reference to FIG. 1, discovery windows 312, 314 are reserved for devices 104, 106, 108, and 110 to perform discovery and synchronization operations corresponding to NAN 102. It can be a period of time.

  [0138] The first discovery window 312 may start at time t1 and end at time t2, and the second discovery window 314 may start at time t17 and end at time t18. Discovery windows 312, 314 may have the same discovery window duration. For example, the time period between time t1 and time t2 may be the same as the time period between time t17 and time t18. The time length of the discovery window may be determined according to the NAN standard or protocol. A time period between successive discovery windows, such as first discovery window 312 and second discovery window 314, may be referred to as discovery period 316. In certain implementations, the duration of the discovery period 316 may be 500 time units (TUs) according to the NAN standard or protocol. Each TU may correspond to 1024 microseconds (μs) as described in the IEEE 802.11-2012 specification, and 500 TU may correspond to about 512 ms.

  [0139] During the first discovery window 312, the service advertisement 120 may be transmitted over the NAN communication channel 304. Service advertisement 120 may indicate logical channel 150 as described with reference to FIG. In the example of FIG. 3, the logical channel 150 may include a first auxiliary channel 308 and a second auxiliary channel 310. For example, the provider logic 130 of the first device 104 may send a service advertisement 120 over the NAN communication channel 304 to advertise the service provided by the first device 104. For example, service advertisement 120 may indicate a NAN data link group index corresponding to first auxiliary channel 308 and at least one auxiliary channel offset 318 (eg, channel offsets 2 and 18 in row 212 of table 200). Further, service advertisement 120 may indicate a NAN data link group index corresponding to second auxiliary channel 310 and at least one auxiliary channel offset 320 (eg, channel offsets 9 and 25 in row 214 of table 200). The subscriber logic 134 of the second device 106 may send a subscription message 124 over the NAN communication channel 304 in response to receiving the service advertisement 120 as described with reference to FIG. .

  [0140] The basic communication channel 306 may correspond to a transmission window of the NAN communication channel 304 that starts after the end of the discovery window, such as the discovery windows 312 and 314 of the NAN communication channel 304. For example, as described further below with respect to FIG. 4, the basic communication channel 306 may correspond to a first transmission window 322 that starts after the first discovery window 312. FIG. 3 shows that the first transmission window 322 following the first discovery window 312 may start at t2 and end at t4. Although not shown in FIG. 3, the basic communication channel 306 may also correspond to a second transmission window that follows the second discovery window 314 that may begin at t18.

  [0141] Each transmission window associated with the basic communication channel 306 may include a paging window and a data transmission window. For example, the first transmission window 322 that follows the first discovery window 312 may include a first paging window 324 and a first data transmission window 326. As used herein, a time period that includes a paging window and a data window (or data transmission window) is referred to as a transmission window, a TX window, a data transmission window, or a NAN data link time block (NDL-TB). Can be. The first paging window 324 may start at t2 and end at t3. The first data transmission window 326 may start at t3 and end at t4. Further, although not shown in the example of FIG. 3, the transmission window following the second discovery window 314 may also include a paging window (starting at t18) and a data transmission window. The time length of the paging window, the time length of the data transmission window, the time length of the transmission window (eg, 128 time units (TU), 256 TU, or 512 TU), or a combination thereof may be determined according to the NAN standard or protocol.

  [0142] As further described below with respect to FIGS. 5 and 7, the first auxiliary channel 308 may correspond to a first transmission window 328 and a second transmission window 330. For example, the at least one auxiliary channel offset 318 may indicate a transmission window that starts after a period of time corresponding to at least one auxiliary channel offset 318 from the start of a NAN discovery window, such as the first discovery window 312. In the particular implementation shown in FIG. 3, the first auxiliary channel 308 may correspond to multiple offsets indicating multiple transmission windows during each discovery period, such as discovery period 316. In an alternative implementation, the first auxiliary channel 308 may correspond to a single offset indicating a single transmission window during each discovery period.

  [0143] The first transmission window 328 associated with the first auxiliary channel 308 may begin following the end of the first discovery window 312. For example, the first transmission window 328 may start at time t5 and end at time t7. Time t5 may exist after a time period from time t1, which corresponds to a first offset (eg, 2) of at least one auxiliary channel offset 318. The second transmission window 330 associated with the first auxiliary channel 308 may begin following the end of the first transmission window 328. For example, the second transmission window 330 may start at time t11 and end at time t13. Time t11 may exist after a period of time from time t5, which corresponds to a second offset (eg, 18) of at least one auxiliary channel offset 318.

  [0144] Each transmission window of the first auxiliary channel 308 may include a paging window and a data transmission window. For example, the first transmission window 328 may include a first paging window 332 and a first data transmission window 334. As another example, the second transmission window 330 may include a second paging window 336 and a second data transmission window 338. The first paging window 332 may start at t5 and end at t6. The first data transmission window 334 may start at t6 and end at t7. The second paging window 336 may start at t11 and end at t12. The second data transmission window 338 may start at t12 and end at t13. The time length of the paging window, the time length of the data transmission window, or both may be determined according to the NAN standard or protocol.

  [0145] As described further below with respect to FIGS. 6 and 8, the second auxiliary channel 310 may correspond to a first transmission window 340 and a second transmission window 342. For example, the at least one auxiliary channel offset 320 may indicate a transmission window that starts after a period of time corresponding to at least one auxiliary channel offset 320 from the start of a NAN discovery window, such as the first discovery window 312. In the particular implementation shown in FIG. 3, the second auxiliary channel 310 may correspond to multiple offsets indicating multiple transmission windows during each discovery period (eg, discovery period 316). In an alternative implementation, the second auxiliary channel 310 may correspond to a single offset indicating a single transmission window during each discovery period.

  [0146] The first transmission window 340 associated with the second auxiliary channel 310 may begin following the end of the first discovery window 312. For example, the first transmission window 340 may start at time t8 and end at time t10. Time t8 may exist after a period of time from time t1, and this time period corresponds to a first offset (eg, 9) of at least one auxiliary channel offset 320. A second transmission window 342 associated with the second auxiliary channel 310 may begin following the end of the first transmission window 340. For example, the second transmission window 342 may start at time t14 and end at time t16. Time t14 may exist after a period of time from time t8, which corresponds to a second offset (eg, 25) of at least one auxiliary channel offset 320.

  [0147] Each transmission window of the second auxiliary channel 310 may include a paging window and a data transmission window. For example, the first transmission window 340 may include a first paging window 344 and a first data transmission window 346. As another example, the second transmission window 342 may include a second paging window 348 and a second data transmission window 350. The first paging window 344 may start at t8 and end at t9. The first data transmission window 346 may start at t9 and end at t10. The second paging window 348 may start at t14 and end at t15. The second data transmission window 350 may start at t15 and end at t16. The time length of the paging window, the time length of the data transmission window, or both may be determined according to the NAN standard or protocol.

  [0148] As described with reference to FIG. 1, during the paging window of the basic communication channel 306, the paging window of the first auxiliary channel 308, and / or the paging window of the second auxiliary channel 310, The provider logic 130 of one device 104 may send the paging message 128 via the NAN communication channel 304, the first auxiliary channel 308, the second auxiliary channel 310, or a combination thereof. Further, as described with reference to FIG. 1, the provider logic 130 of the first device 104 may include the data transmission window of the basic communication channel 306, the data transmission window of the first auxiliary channel 308, and / or the first Data 122 may be transmitted via the data transmission window of the two auxiliary channels 310.

  [0149] In certain implementations, the paging message 128 may include an indication of unavailability for the next N logical channels. In this case, the subscriber logic 134 of the second device 106 may refrain from monitoring the next N logical channels of the logical channel 150 of the particular data link group. In some cases, the second device 106 may reduce power consumption by staying in a low power mode of operation and may refrain from starting to monitor the next N logical channels. Alternatively, the second device 106 may perform one or more operations associated with another data link group. In some cases, when the second device 106 subscribes to multiple provider devices, the second device 106 may save power and / or power based on a common portion of non-availability from each of the multiple provider devices. Or simultaneous operation can be scheduled.

  [0150] In another implementation, the paging message 128 may include an indication of availability for the next N logical channels. In response to the first device 104, the second device 106 may acknowledge receipt of an availability indication for the next N logical channels. As a non-limiting example, the second device 106 may respond via a PS-POLL message. If the first device 104 receives an acknowledgment from each subscriber device, the first device 104 may not send traffic announcements on other logical channels. Instead, the first device 104 may proceed to send data traffic. Thus, some messages such as traffic announcements and acknowledgments in the paging window can be reduced.

  [0151] Thus, in some cases, the first device 104 and / or the second device 106 can reduce power consumption by performing operations based on the timing window shown in the timing diagram 300. . For example, the second device 106 may refrain from monitoring the next N logical channels if the paging message 128 from the first device 104 includes an indication of unavailability for the next N logical channels. . In some cases, the second device 106 may reduce power consumption by staying in a low power mode of operation and may refrain from starting to monitor the next N logical channels. In other cases, the number of messages in the paging window may be reduced when the subscriber device is receiving an indication of the availability of the provider device on the N logical channels.

  [0152] Referring to FIG. 4, a timing diagram is shown corresponding to a particular portion of the overall timeline 302 of FIG. In certain implementations, the timing diagram 400 may correspond to the operation of certain implementations of the system 100 of FIG. The timing and operation shown in FIG. 4 is for illustration and not limitation. In other implementations, additional or fewer operations may be performed and timing may be different.

  [0153] FIG. 4 illustrates a specific example where the first paging window 324 associated with the basic communication channel 306 includes a paging message 128, as described with respect to FIG. In this case, the provider logic 130 of the first device 104 may send a paging message 128 via the NAN communication channel 304.

  [0154] In certain implementations, the paging message 128 may include an indication of unavailability for the next N logical channels. Referring to FIG. 1, the indication 162 included in the paging message 128 may represent an indication of the unavailability of the first device 104 for the next N logical channels 164. In response to receiving the unavailability indication 162 during the first paging window 324, as described with respect to FIG. 2, the subscriber logic 134 of the second device 106 may It may refrain from monitoring the next N logical channels 164 of logical channel 150. In some cases, the second device 106 may reduce power consumption by staying in a low power mode of operation and may refrain from starting to monitor the next N logical channels 164. Alternatively, the second device 106 may perform one or more operations associated with another data link group.

  [0155] As a non-limiting example for illustration, the subscriber logic 134 of the second device 106 may refrain from monitoring the next four logical channels (ie, N = 4). Referring to FIG. 3, the second device 106 refrains from monitoring the first auxiliary channel 308 during the first paging window 332 (starting at t5 and ending at t6), and the first paging window Refrain from monitoring the second auxiliary channel 310 during 344 (starting at t8 and ending at t9) and first auxiliary during the second paging window 336 (starting at t11 and ending at t12). You can refrain from monitoring channel 308 and refrain from monitoring the first auxiliary channel 308 during the second paging window (starting at t14 and ending at t15).

  [0156] As a further example, the subscriber logic 134 of the second device 106 may refrain from monitoring the next five logical channels (ie, N = 5). Referring to FIG. 3, the second device 106 refrains from monitoring the first auxiliary channel 308 during the first paging window 332 (starting at t5 and ending at t6), and the first paging window Refrain from monitoring the second auxiliary channel 310 during 344 (starting at t8 and ending at t9) and first auxiliary during the second paging window 336 (starting at t11 and ending at t12). You can refrain from monitoring channel 308 and refrain from monitoring the first auxiliary channel 308 during the second paging window (starting at t14 and ending at t15). Further, although not shown in FIG. 3, the second device 106 may refrain from monitoring the first auxiliary channel 308 during the first paging window that occurs after the second discovery window 314. . That is, the first device 104 may provide an indication of unavailability for other logical channels associated with other discovery periods after the discovery period 316 shown in FIG.

  [0157] In another implementation, the paging message 128 may include an indication of availability for the next N logical channels. Referring to FIG. 1, the indication 162 included in the paging message 128 represents an indication of the availability of the first device 104 for the next N logical channels 164. The first device 104 may wait to receive an acknowledgment from the subscriber device indicating receipt of the availability indication. In response to the first device 104, the second device 106 may acknowledge receipt of an availability indication for the next N logical channels. As a non-limiting example, the second device 106 may respond via a PS-POLL message. In response to receiving an acknowledgment from each of the subscriber devices, the first device 104 may not send traffic announcements on other logical channels. Instead, the first device 104 may proceed to send data traffic.

  [0158] In some cases, the second device 106 may represent a single subscriber for services provided by the first device 104. In this example, if the first device 104 receives an acknowledgment, such as a PS-POLL message, from the second device 106 within the paging window 324 associated with the basic communication channel 306, the first device 104 It may refrain from sending traffic announcements on N logical channels.

  [0159] As a non-limiting example for illustration, the first device 104 may provide an indication of availability for the next four logical channels (ie, N = 4). In this case, if the first device 104 receives an acknowledgment from the second device 106 within the paging window 324, the first device 104 is associated with the first auxiliary channel 308 and the second auxiliary channel 310. It may refrain from sending traffic announcements in subsequent paging windows. Rather, the first device 104 may proceed to transmit data 122 in the paging window portion of the subsequent transmission window, not just the data window portion of the subsequent transmission window. Illustratively, the first device 104 can transmit data 122 in the first paging window 332 of the first transmission window 328 as well as in the first data transmission window 334. Depending on the amount of data to be transmitted to the second device 106, the first device 104 may have a first paging window 344 associated with the first transmission window 340 of the second auxiliary channel 310, the first Data 122 may be transmitted in a second paging window 336 associated with the second transmission window 330 of the auxiliary channel 308 and a second paging window 348 associated with the second transmission window 342 of the second auxiliary channel 310. .

  [0160] If the first device 104 does not receive an acknowledgment from the second device 106 within the paging window 324, the first device 104 may send another indication of availability in a subsequent paging message. Illustratively, the provider logic 130 of the first device 104 may generate another paging message 128 to be included in the first paging window 332 of the first transmission window 328 associated with the first auxiliary channel 308. . In this case, the number of logical channels can be decremented by one. That is, the first device 104 may indicate availability for the next N-1 logical channels. If the first device 104 receives an acknowledgment from the second device 106 within the first paging window 332, the first device 104 sends a traffic announcement on the next N-1 logical channels. Can refrain from. If no acknowledgment is received, the first device 104 may continue to send an availability indication in a subsequent paging window. For example, the first device 104 may follow sending an availability indication during the first paging window 344 associated with the second auxiliary channel 310.

  [0161] Referring to FIG. 5, a timing diagram corresponding to a particular portion of the overall timeline 302 of FIG. 3 is shown and designated generally as 500. FIG. In certain implementations, the timing diagram 500 may correspond to the operation of certain implementations of the system 100 of FIG. The timing and operations shown in FIG. 5 are for illustration and not limitation. In other implementations, additional or fewer operations may be performed and timing may be different.

  [0162] FIG. 5 shows a specific example where the first paging window 332 associated with the first auxiliary channel 308 includes the paging message 128, as described with respect to FIG. In this case, the provider logic 130 of the first device 104 may send a paging message 128 via the first auxiliary channel 308.

  [0163] In certain implementations, the paging message 128 may include an indication of unavailability for the next N logical channels. Referring to FIG. 1, the indication 162 included in the paging message 128 represents an indication of the unavailability of the first device 104 for the next N logical channels 164. In response to receiving the unavailability indication 162 during the first paging window 332, as described with respect to FIG. 2, the subscriber logic 134 of the second device 106 may It may refrain from monitoring the next N logical channels 164 of logical channel 150. In some cases, the second device 106 may reduce power consumption by staying in a low power mode of operation and may refrain from starting to monitor the next N logical channels 164. Alternatively, the second device 106 may perform one or more operations associated with another data link group.

  [0164] As a non-limiting example for illustration, the subscriber logic 134 of the second device 106 may refrain from monitoring the next three logical channels (ie, N = 3). Referring to FIG. 3, the second device 106 refrains from monitoring the second auxiliary channel 310 during the first paging window 344 (starting at t8 and ending at t9), and the second paging window Refrain from monitoring the first auxiliary channel 308 during 336 (starting at t11 and ending at t12) and second auxiliary during the second paging window 348 (starting at t14 and ending at t15). It may refrain from monitoring channel 310. In some cases, the second device 106 may conserve power by operating in a low power mode of operation during the three paging windows 344, 336, 348. Alternatively, the second device 106 may perform operations associated with another data link group.

  [0165] As a further example, the subscriber logic 134 of the second device 106 may refrain from monitoring the next four logical channels (ie, N = 4). Referring to FIG. 3, the second device 106 refrains from monitoring the second auxiliary channel 310 during the first paging window 344 (starting at t8 and ending at t9), and the second paging window Refrain from monitoring the first auxiliary channel 308 during 336 (starting at t11 and ending at t12) and second auxiliary during the second paging window 348 (starting at t14 and ending at t15). It may refrain from monitoring channel 310. Further, although not shown in FIG. 3, the second device 106 may refrain from monitoring the first auxiliary channel 308 during the first paging window that occurs after the second discovery window 314. . That is, the first device 104 may provide an indication of unavailability for other logical channels associated with other discovery periods after the discovery period 316 shown in FIG.

  [0166] In another implementation, the paging message 128 may include an availability indication for the next N logical channels. Referring to FIG. 1, the indication 162 included in the paging message 128 represents an indication of the availability of the first device 104 for the next N logical channels 164. The first device 104 may wait to receive an acknowledgment from the subscriber device indicating receipt of the availability indication. In response to the first device 104, the second device 106 may acknowledge receipt of an availability indication for the next N logical channels. In response to receiving an acknowledgment from each of the subscriber devices, the first device 104 may not send traffic announcements on other logical channels. Instead, the first device 104 may proceed to send data traffic.

  [0167] In some cases, the second device 106 may represent a single subscriber for services provided by the first device 104. In this example, if the first device 104 receives an acknowledgment, such as a PS-POLL message, from the second device 106 within the first paging window 332 associated with the first auxiliary channel 308, the first device 104 may refrain from sending traffic announcements on the next N logical channels.

  [0168] As a non-limiting example for illustration, the first device 104 may provide an indication of availability for the next N logical channels. In this case, if the first device 104 receives an acknowledgment from the second device 106 within the first paging window 332, the first device 104 refrains from sending a traffic announcement in a subsequent paging window. obtain. Rather, the first device 104 may proceed to transmit data 122 in the first paging window 344 associated with the first transmission window 340 of the second auxiliary channel 310.

  [0169] If the first device 104 does not receive an acknowledgment from the second device 106 within the first paging window 332, the first device 104 sends another indication of availability in a subsequent paging message. obtain. Illustratively, the provider logic 130 of the first device 104 may generate another paging message 128 to be included in the first paging window 344 of the first transmission window 340 associated with the second auxiliary channel 310. . In this case, the number of logical channels can be decremented by one. That is, the first device 104 may indicate availability for the next N-1 logical channels. If the first device 104 receives an acknowledgment from the second device 106 within the first paging window 344, the first device 104 sends a traffic announcement on the next N-1 logical channels. Can refrain from. If no acknowledgment is received, the first device 104 may continue to send an availability indication in a subsequent paging window. For example, the first device 104 may continue to send an availability indication during the second paging window 336 associated with the first auxiliary channel 308.

  [0170] Referring to FIG. 6, a timing diagram corresponding to a particular portion of the overall timeline 302 of FIG. 3 is shown and designated generally 600. In certain implementations, the timing diagram 600 may correspond to the operation of certain implementations of the system 100 of FIG. The timing and operations shown in FIG. 6 are for illustration and not limitation. In other implementations, additional or fewer operations may be performed and timing may be different.

  [0171] FIG. 6 shows a particular example where the first paging window 344 associated with the second auxiliary channel 310 includes a paging message 128, as described with respect to FIG. In this case, the provider logic 130 of the first device 104 may send a paging message 128 via the second auxiliary channel 310.

  [0172] In certain implementations, the paging message 128 may include an indication of unavailability for the next N logical channels. Referring to FIG. 1, the indication 162 included in the paging message 128 represents an indication of the unavailability of the first device 104 for the next N logical channels 164. In response to receiving the unavailability indication 162 during the first paging window 344, as described with respect to FIG. 2, the subscriber logic 134 of the second device 106 may It may refrain from monitoring the next N logical channels 164 of logical channel 150. In some cases, the second device 106 may reduce power consumption by staying in a low power mode of operation and may refrain from starting to monitor the next N logical channels 164. Alternatively, the second device 106 may perform one or more operations associated with another data link group.

  [0173] As a non-limiting example for illustration, the subscriber logic 134 of the second device 106 may refrain from monitoring the next two logical channels (ie, N = 2). Referring to FIG. 3, the second device 106 refrains from monitoring the first auxiliary channel 308 during the second paging window 336 (starting at t11 and ending at t12), and the second paging window It may refrain from monitoring the second auxiliary channel 310 during 348 (starting at t14 and ending at t15). In some cases, the second device 106 may conserve power by operating in a low power mode of operation during the two paging windows 336, 348. Alternatively, the second device 106 may perform operations associated with another data link group.

  [0174] As a further example, the subscriber logic 134 of the second device 106 may refrain from monitoring the next three logical channels (ie, N = 3). Referring to FIG. 3, the second device 106 refrains from monitoring the first auxiliary channel 308 during the second paging window 336 (starting at t11 and ending at t12), and the second paging window It may refrain from monitoring the second auxiliary channel 310 during 348 (starting at t14 and ending at t15). Further, although not shown in FIG. 3, the second device 106 may refrain from monitoring the first auxiliary channel 308 during the first paging window that occurs after the second discovery window 314. . That is, the first device 104 may provide an indication of unavailability for other logical channels associated with other discovery periods after the discovery period 316 shown in FIG.

  [0175] In another implementation, the paging message 128 may include an indication of availability for the next N logical channels. Referring to FIG. 1, the indication 162 included in the paging message 128 represents an indication of the availability of the first device 104 for the next N logical channels 164. The first device 104 may wait to receive an acknowledgment from the subscriber device indicating receipt of the availability indication. In response to the first device 104, the second device 106 may acknowledge receipt of an availability indication for the next N logical channels. In response to receiving an acknowledgment from each of the subscriber devices, the first device 104 may not send traffic announcements on other logical channels. Instead, the first device 104 may proceed to send data traffic.

  [0176] In some cases, the second device 106 may represent a single subscriber for services provided by the first device 104. In this example, if the first device 104 receives an acknowledgment, such as a PS-POLL message, from the second device 106 within the first paging window 332 associated with the first auxiliary channel 308, the first device 104 may refrain from sending traffic announcements on the next N logical channels.

  [0177] As a non-limiting example for illustration, the first device 104 may provide an indication of availability for the next N logical channels. In this case, if the first device 104 receives an acknowledgment from the second device 106 within the first paging window 344, the first device 104 refrains from sending traffic announcements in subsequent paging windows. obtain. Rather, the first device 104 may proceed to transmit data 122 in a second paging window 336 that is associated with the second transmission window 330 of the first auxiliary channel 308.

  [0178] If the first device 104 does not receive an acknowledgment from the second device 106 within the first paging window 344, the first device 104 sends another indication of availability in a subsequent paging message. obtain. Illustratively, the provider logic 130 of the first device 104 may generate another paging message 128 to be included in the second paging window 336 of the second transmission window 330 associated with the first auxiliary channel 308. . In this case, the number of logical channels can be decremented by one. That is, the first device 104 may indicate availability for the next N-1 logical channels. If the first device 104 receives an acknowledgment from the second device 106 within the second paging window 336, the first device 104 sends a traffic announcement on the next N-1 logical channels. Can refrain from. If no acknowledgment is received, the first device 104 may continue to send an availability indication in a subsequent paging window. For example, the first device 104 may continue to send an availability indication during the second paging window 348 associated with the second auxiliary channel 310.

  [0179] Referring to FIG. 7, a timing diagram corresponding to a particular portion of the overall timeline 302 of FIG. 3 is shown and designated generally as 700. In certain implementations, the timing diagram 700 may correspond to operation of certain implementations of the system 100 of FIG. The timing and operations shown in FIG. 7 are for illustration and not limitation. In other implementations, additional or fewer operations may be performed and timing may be different.

  [0180] FIG. 7 illustrates a particular example where the second paging window 336 associated with the first auxiliary channel 308 includes the paging message 128, as described with respect to FIG. In this case, the provider logic 130 of the first device 104 may send a paging message 128 via the first auxiliary channel 308.

  [0181] In certain implementations, the paging message 128 may include an indication of unavailability for the next N logical channels. Referring to FIG. 1, the indication 162 included in the paging message 128 represents an indication of the unavailability of the first device 104 for the next N logical channels 164. In response to receiving the unavailability indication 162 during the second paging window 336, as described with respect to FIG. 2, the subscriber logic 134 of the second device 106 is responsible for the particular data link group. It may refrain from monitoring the next N logical channels 164 of logical channel 150. In some cases, the second device 106 may reduce power consumption by staying in a low power mode of operation and may refrain from starting to monitor the next N logical channels 164. Alternatively, the second device 106 may perform one or more operations associated with another data link group.

  [0182] In another implementation, the paging message 128 may include an indication of availability for the next N logical channels. Referring to FIG. 1, the indication 162 included in the paging message 128 represents an indication of the availability of the first device 104 for the next N logical channels 164. The first device 104 may wait to receive an acknowledgment from the subscriber device indicating receipt of the availability indication. In response to the first device 104, the second device 106 may acknowledge receipt of an availability indication for the next N logical channels. In response to receiving an acknowledgment from each of the subscriber devices, the first device 104 may not send traffic announcements on other logical channels. Instead, the first device 104 may proceed to send data traffic.

  [0183] Referring to FIG. 8, a timing diagram is shown corresponding to a particular portion of the overall timeline 302 of FIG. In certain implementations, the timing diagram 800 may correspond to the operation of certain implementations of the system 100 of FIG. The timing and operations shown in FIG. 8 are for illustration and not limitation. In other implementations, additional or fewer operations may be performed and timing may be different.

  [0184] FIG. 8 illustrates a particular example where the second paging window 348 associated with the second auxiliary channel 310 includes a paging message 128, as described with respect to FIG. In this case, the provider logic 130 of the first device 104 may send a paging message 128 via the second auxiliary channel 310.

  [0185] In certain implementations, the paging message 128 may include an indication of unavailability for the next N logical channels. Referring to FIG. 1, the indication 162 included in the paging message 128 represents an indication of the unavailability of the first device 104 for the next N logical channels 164. In response to receiving the unavailability indication 162 during the second paging window 348, as described with respect to FIG. 2, the subscriber logic 134 of the second device 106 may be configured for a particular data link group. It may refrain from monitoring the next N logical channels 164 of logical channel 150. In some cases, the second device 106 may reduce power consumption by staying in a low power mode of operation and may refrain from starting to monitor the next N logical channels 164. Alternatively, the second device 106 may perform one or more operations associated with another data link group.

  [0186] In another implementation, the paging message 128 may include an indication of availability for the next N logical channels. Referring to FIG. 1, the indication 162 included in the paging message 128 represents an indication of the availability of the first device 104 for the next N logical channels 164. The first device 104 may wait to receive an acknowledgment from the subscriber device indicating receipt of the availability indication. The second device 106 may acknowledge receipt of an availability indication for the next N logical channels in response to the first device 104, such as via a PS-POLL message. In response to receiving an acknowledgment from each of the subscriber devices, the first device 104 may not send traffic announcements on other logical channels. Instead, the first device 104 may proceed to send data traffic.

  [0187] Referring to FIG. 9, a diagram 900 of an example transmission window (TW) 902 is shown. FIG. 9 shows that the send window 902 includes a paging portion 904 and a data portion 906 separated by a paging window boundary (PWB) 908. The paging portion 904 may be a paging window and the data portion 906 may be a data window. During the paging portion 904, the data source may send a paging message. For example, the first device 104 of FIG. 1 may send the paging message 128 of FIG. In some cases, during the paging portion 904, the data source receives a trigger message from a data sink, such as the second device 106 of FIG. 1, indicating that the data sink is ready to receive data. obtain. The data portion 906 of the send window 902 can be used to send / receive data such as the data 122 of FIG. In some cases, the data sink may send a trigger message during the data portion 906 and may wait for data transmission.

  [0188] In some cases, it may be difficult to predict the size of the paging portion 904 of the transmission window 902. Illustratively, if a relatively large number of transmitters are in the data link group, a relatively large paging window may be appropriate to give each of the transmitters an opportunity to send a traffic announcement. That is, if the paging portion 904 of the send window 902 is too small, some of the transmitters may not be able to send traffic announcements. In some cases, this may lead to underutilization of the data portion 906 of the transmission window 902, which means that only a subset of transmitters that are capable of transmitting traffic announcements during the paging portion 904 will receive data. This is because it is not possible to transmit. In contrast, a relatively large paging window can result in underutilization when a relatively small number of transmitters are in the data link group. That is, if the paging portion 904 of the transmission window 902 is too large, each of the transmitters may have sufficient time to send a traffic announcement and receive an associated ACK, with the remainder of the paging portion 904 being a data transmission. Can be used. Thus, utilizing a PWB that is large enough to give each of the transmitters an opportunity to send a traffic announcement, but instead small enough to reduce the potential idle time that can be used for data transmission May be desirable.

  [0189] In some cases, the paging window size may be fixed and specified. That is, the PWB 908 can be fixed after a certain time from the start time of the transmission window 902. In this case, the device may be constrained to send a paging message during the paging window, and data transmission may only occur after the paging window. However, such a scheme may leave a portion of the paging window unused. For example, when a data link group includes a relatively small number of subscriber devices, a portion of the paging window may remain unused. That is, the paging window may be underutilized if traffic announcements and associated ACKs are completed before PWB 908. The remaining time in the paging portion 904 of the transmission window 902 can be utilized for data transmission instead. In addition, one or more devices that are not identified as data recipients may remain active and consume power in order to continue to monitor a particular logical channel.

  [0190] In other cases, the paging window size may be fixed, but the size may not be specified globally, and may instead be determined within a NAN, such as the NAN 102 of FIG. For example, the anchor device may determine the size of the paging window based on the size of the NAN cluster. As another example, a service founder may determine the size of a paging window for a particular service, and the number of consumers for a particular service and / or the number of other services and devices that use the same logical channel The paging window size may be adapted based on

  [0191] In some implementations, the size of the paging portion 904 of the transmission window 902 may be adjusted based on the number of data sources, the number of data sinks, the data traffic rate, or a combination thereof. During the paging portion 904 of the send window 902, one or more devices may be up and consuming power to monitor a particular logical channel. Accordingly, power consumption by one or more devices can be correlated with the size of the paging portion 904. A relatively large paging portion 904 may increase power consumption and shorten battery life. Further, the time associated with paging portion 904 of transmission window 902 represents the time that can be allocated to data portion 906. Thus, by reducing the size of the paging portion 904 of the transmission window 902, more time can be allowed for data transmission.

  [0192] In some cases, PWB 908 may be relatively flexible. That is, PWB 908 may represent the upper boundary of the time of transmission of a paging message (ie, no paging message may be transmitted after PWB 908). However, data transmission may begin upon detecting that the medium is idle during a paging time that exceeds the threshold time length. In certain implementations, contention window parameters may be adjusted to obtain paging window boundary flexibility. For example, one contention window parameter may be used for a paging frame and another contention window parameter may be used for a data frame. In some implementations, if there is a very small contention window size for paging messages and ACKs, paging messages and ACKs get priority during the paging window and much faster than other transmissions. Sent out. If there are a large number of transmitting devices during the paging window, the paging message and ACK are likely to occupy the entire paging window, and when it hits the PWB 908, the device stops transmitting the paging message and starts transmitting data. If there are fewer sending devices during the paging window, the paging message gets priority and the transmission of the paging message and ACK is completed much earlier in the paging window. In this case, there is an “idle time” between the paging windows, and the device having the data to be transmitted competes for the communication channel and starts sending data during the paging window.

  [0193] In some cases, the paging announcement may be started so that it can start earlier, and if there is time remaining after the paging announcement, data may also be sent during the paging window. The contention window size (or contention parameter) may be adjusted so that has a smaller contention size. For example, one contention window parameter (“CW_paging”) may be used for paging frames, and another contention window parameter (“FixedCW_data_min, CW_data”) may be used for data frames. . To send a paging message, the device may select a backoff window from [0, CW_paging]. If the device initiates contention before PWB 908 to send data, the device may select a backoff window from [FixedCW_data_min, CW_data], where FixedCW_data_min is greater than CW_paging. As a non-limiting example for illustration, CW_paging may be 100, while FixedCW_data_min may be 101, and CW_data may be 1000. In this illustrative example, the device can select a first random number between 0 and 100 as the backoff window for the paging frame, and the device A random number of can be selected for the data frame.

  [0194] As an example for the first description, a device may begin competing for data transmission at the beginning of a transmission window, but if a trigger message is not received before the backoff window counts down, You can cancel. That is, for every traffic announcement, the transmitter expects an acknowledgment such as a trigger. If the transmitter does not receive an ACK, the transmitter may not transmit data (no corresponding countdown for data). For example, as described above, if a transmitter provides an indication of availability for the next N logical channels, and each of the receivers acknowledges that indication, the transmitter Instead of waiting for the countdown to begin until the start of the data window, the transmitter may begin counting down the data much earlier within the paging window.

  [0195] As an example for the second description, the device may begin to contend for data transmission during the paging window after the transmitter receives the trigger frame. That is, the trigger frame represents an ACK to the paging notification. Referring to the previous example where the transmitter provides availability indications for the next four logical channels, the transmitter may not send out a paging announcement at all, but the transmitter may have a slightly higher contention window. May be in a data contention queue with Thus, when another transmitter with a paging announcement to send completes sending the announcement, the transmitter can begin sending data, which can begin to win contention over the communication channel. Because. Since the PW contention window (eg, CW_paging) may be smaller, the countdown may begin earlier to prioritize the paging announcement over the data transmission. That is, by selecting a smaller CW size for CW_paging as compared to FixedCW_data_min, the paging announcement is prioritized over the data. At the beginning of the paging window, the transmitter that has the data to send begins counting the associated contention window.

  [0196] If the device initiates contention after PWB 908, normal data contention parameters may be used, and the backoff parameter is selected from [0, CW_data]. In the above example, for contention after PWB 908, the device may select a random number between 0 and 1000 as the backoff window. That is, if the paging window is too crowded and there are a large number of paging messages being sent during the paging window, after PWB 908, the device will use the normal data contention parameters to go around the communication channel. Can compete. Thus, within the paging window, data transmission can begin early, but the minimum value of data contention during the paging window exceeds the maximum value of paging contention (eg, 101 to 1000). However, in the data window, contention over the communication channel for transmitting data begins at the beginning of the data window and continues to the contention boundary for data transmission (eg, 0 to 1000).

  [0197] In another specific implementation, the traffic type or traffic category of the paging message may be set to a specific value to prioritize transmission of the paging message. Illustratively, each type of message, such as a paging message, trigger message, data frame, or others, may have a traffic category field that indicates the category of the message. For example, each message may include a quality of service (QoS) category. A traffic category (eg, QoS category) may indicate the priority of the message. As a non-limiting example, a traffic category may have a value selected from a high priority value, a medium priority value, and a low priority value, and a particular message is prioritized accordingly. Sometimes. In one particular implementation, the traffic category is a QoS category with defined values, for example in IEEE or other industry standards, or by vendors, each value corresponding to a different priority. For example, a voice message may have a higher QoS priority than a data message. To prioritize the paging message, the device may generate a paging message with the highest priority value for the traffic category. The trigger message may have a lower priority than the paging message, and the data message may have a lower priority than the trigger message. By setting the traffic category to a specific value based on the type of message, transmission of paging messages during the paging window may be prioritized. In addition, transmission of data during the paging window may be enabled if transmission of other higher priority messages, such as paging messages, has been completed.

  [0198] Referring to FIG. 10, a diagram 1000 of an alternative design of a transmission window (TW) 1002 is shown. FIG. 10 shows that the transmission window 1002 can include a paging portion 1004, a trigger portion 1006, and a data portion 1008. The paging portion 1004 may be a paging window, the trigger portion 1006 may be a trigger window, and the data portion 1008 may be a data window. Paging portion 1004 and trigger portion 1006 are separated by a paging window boundary (PWB) 1010, and trigger portion 1006 and data portion 1008 are separated by a trigger window boundary (TrWB) 1012. In FIG. 10, the trigger portion 1006 represents a dedicated time period for the data sink to send a trigger message to the data source in response to a paging message from the data source. For example, the trigger portion 1006 represents a time period for the second device 106 to send a PS-POLL message to the first device 104 in response to the paging message 128 of FIG.

  [0199] During the paging portion 1004, a data source, such as the first device 104 of FIG. 1, may send a paging announcement to one or more subscriber devices. For example, the first device 104 may send a paging announcement to the second device 106. The trigger portion 1006 represents a time period for the subscriber device to respond to the paging announcement with a trigger message. However, in some cases, the subscriber device may not be available. For example, the subscriber device may be operating in a low power mode. Thus, the subscriber device may not respond to the paging announcement within the trigger window. Thus, the transmitting device may determine whether there is at least one receiver that is active and available to receive data based on whether a trigger message is received within the trigger window. If a trigger message is not received within a trigger window, such as the time period between PWB 1010 and TrWB 1012, the transmitting device may transition to a low power operating mode for the remainder of the transmission window 1002.

  [0200] In some implementations, the order in which receiving devices transmit trigger frames may be determined based on the order in which the receiving devices appear in the paging announcement. For TIM, the order can be determined by the bit order of the AID. This configuration may reduce contention in the trigger window between receiver devices attempting to acknowledge paging announcements from the transmitting device. In some cases, if the first receiver device is unavailable, there may be a threshold period after which the second receiver device can respond with a trigger frame. That is, the second receiver device can wait for a threshold time period for the first receiver device to acknowledge the paging announcement, and the first receiver device is within the threshold time period. If not responding, the second receiver device may send a trigger frame.

  [0201] One potential advantage associated with the send window 1002 shown in FIG. 10 is that the size of the paging window may be relatively small. The number of devices that can send a paging announcement may be limited by the possibility that the provider device will not send a paging announcement, and the subscriber device acknowledges the announcement, Too many devices contend for announcement traffic while not having enough time to send data as a result of the data window being too small to accommodate data transmissions from all of the provider devices. In contrast, in an alternative configuration, there may be several provider devices that remain active during the transmission window 1002 but are unable to transmit or receive data.

  [0202] In an illustrative example, five devices can transmit a paging announcement, and eight receiver devices are identified for each of the five transmitting devices. However, the data window may not be large enough to accommodate 40 data transmissions. Therefore, it may be advantageous to reduce the size of the paging window. Illustratively, three of the five sending devices may send a paging announcement to eight receiver devices. However, instead of receiving 24 ACKs (ie, ACKs from all 8 receiver devices to 3 transmitting devices), there may be 20 ACKs received. In this case, there can be 20 data transmissions in the data window. That is, devices that are not capable of acknowledging the announcement in the trigger window can transition to a low power mode of operation, thereby maintaining battery life. Thus, instead of 40 receiving devices staying active and reducing battery life, only 20 receiving devices staying active while the other 20 receiving devices maintain battery life. Can do.

  [0203] In some implementations, unused time associated with a trigger window may be reused for data transmission. For example, contention window parameters may be adjusted to prioritize ACKs such as PS-POLL messages, while data transmission begins before TrWB 1012 if idle time is detected during the trigger window. Allow that. In certain implementations, one contention window parameter (“CW_Trigger”) may be used for the trigger frame, while another contention window parameter (eg, “FixedCW_data_min, CW_data”) is for the data frame. May be used for To send a trigger message, the device may select a backoff window from [0, CW_Trigger]. If the device initiates contention before TrWB 1012 to send data, the device may select a backoff window from [FixedCW_data_min, CW_data], where FixedCW_data_min is greater than CW_Trigger.

  [0204] Further, in some implementations, unused time associated with a paging window may be reused for trigger message transmission. For example, one contention window parameter (eg, “CW_paging”) may be used for a paging frame, and another contention window parameter (eg, “FixedCW_Trigger_min, CW_Trigger”) is used for a trigger frame. Sometimes. To send a paging message, the device may select a backoff window from [0, CW_paging]. If the device initiates contention before PWB 1010 to send a trigger message, the device may select a backoff window from [FixedCW_Trigger_min, CW_Trigger], where FixedCW_Trigger_min is greater than CW_paging.

  [0205] Although the transmitter may announce in advance whether the transmitter is available or unavailable, the receiver may not have such capabilities. Thus, in some implementations, the availability of a particular receiver is not known until an ACK is received, so a device with traffic for multiple recipients may receive several receptions during the paging window. You may overbook or oversubscribe by advertising for the machine. Illustratively, the transmitter may predetermine that the data transmission time may allow transmission to five receivers. However, the transmitter may not be able to determine whether each of the five receivers is available or unavailable. Thus, if a transmitter has traffic for 6 or more receivers (eg, 10 receivers), the transmitter may announce traffic for all 10 of the receivers. The transmitter may then wait to determine how many of the 10 receivers respond with a trigger frame. The transmitter may then schedule traffic for only five of the receivers or traffic for eight of the receivers, depending on how many responded with the trigger frame. If the transmitter announces traffic for only 5 of the receivers (based on the known capabilities of the data transmission window) and only 3 of the receivers acknowledge the announcement with a trigger frame, There can be underutilization of the data window.

  [0206] In some cases, the paged device may respond during the trigger window by sending a PS-POLL message, a QoS null frame, or via some other mechanism. The transmitter may acknowledge each trigger message. However, if the number of trigger messages exceeds a certain value, the transmitter may not acknowledge additional trigger messages. For example, the transmitter may determine that the size of the transmission window is insufficient to transmit data to each device of the plurality of devices that transmitted the trigger message. The transmitter may send one or more acknowledgments of the trigger message based on a determination that the size of the transmission window is insufficient to send data to each device that sent the trigger message. For example, the transmitter may acknowledge receipt of each trigger message, but may not transmit data during the data window. In another example, the transmitter may acknowledge receipt of a trigger message from a receiver that transmits data during the data window, and a trigger message from a receiver that does not transmit data during the data window. May not be acknowledged. In another example, the transmitter may acknowledge receipt of each of the trigger messages and may indicate in part of the acknowledgment that data is not transmitted to a particular receiver during the data window. To illustrate, in an acknowledgment to a trigger message from a particular receiver, the value of the acknowledgment bit is set to a value that indicates to the particular receiver that no data will be transmitted to the particular receiver during the data window. Can be done. In response to receiving an acknowledgment indicating that data will not be transmitted during the data window, or in response to not receiving an acknowledgment within a specified time period, the receiver enters a low power mode of operation. It can transition or the receiver can join some other network depending on whether or not that transmitter is the only transmitter that the receiver is waiting on.

  [0207] Referring to FIG. 11, a diagram of an example service discovery frame (SDF) 1100 including an attribute having a paged device list (PDL) is shown. In certain implementations, the SDF 1100 may include or correspond to the paging message 128 of FIG. The SDF 1100 includes a frame confirmation (FC) field, a time length field, an address field A1, A2, and A3, a sequence control (seq.ctl.) Field, a time stamp field, a beacon interval field, a capability field, and a frame confirmation sequence (FCS). It may include a header field, such as a field, or a combination thereof. In some implementations, the A1 field may be a receiver address field with a particular receiver address value 170, as described with reference to FIG. In addition, the A3 field may indicate a NAN cluster ID. In certain implementations where a particular receiver address value 170 is a NAN cluster ID, the A1 and A3 fields may have the same value.

  [0208] The SDF 1100 may further include a NAN public action frame 1110. Although described as a NAN public action frame, in other implementations, the NAN public action frame 1110 may be a NAN action frame. In addition, the service discovery frame may include a NAN information element (not shown). The NAN public action frame 1110 may include a category field, an action field, an organizationally unique identifier (OUI), an OUI type field, or a combination thereof. The NAN public action frame 1110 may also include one or more attributes called NAN attributes.

  [0209] In the example shown, the one or more NAN attributes include a first NAN attribute 1112 and a second NAN attribute 1114. Although two NAN attributes are shown, in other implementations, the NAN public action frame 1110 may include more than two NAN attributes or a single NAN attribute. In certain implementations, the first NAN attribute 1112 may correspond to data having a first type, and the second NAN attribute 1114 may correspond to data having a second type. In other implementations, the NAN attribute may be various types of attributes such as service attributes or NAN data link (NAN-DL) attributes.

  [0210] In some implementations, the first NAN attribute 1112, the second NAN attribute 1114, or both may be a page attribute 1120. In some implementations, the page attributes 1120 include each of the fields shown in FIG. In other implementations, the page attributes 1120 may include more or fewer fields than those shown in FIG. 11, and the fields of the page attributes 1120 may be arranged in a different configuration or order. The page attribute 1120 may include an attribute ID field 1122 that includes a specific identification value. A particular identification value may identify the attribute as a page attribute. Illustratively, a message such as SDF 1100 can include an attribute selected from a plurality of attribute types. An attribute having a specific identification value for the attribute ID field 1122 may be specified as a page attribute.

  [0211] The page attribute 1120 may include a length field 1124 that includes a value that specifies the length of the page attribute 1120. The page attribute 1120 may also include a data link group ID field 1126 that includes a value that identifies the data link group. In certain implementations, the particular receiver address value 170 may be the value of the data link group ID field 1126. Data link group ID field 1126 may also be referred to as an NDL identifier.

  [0212] The page attribute 1120 further includes a page control field 1128 and a sequence 1130 of a paged device list (PDL). The page control field 1128 indicates information related to the page attribute 1120. The first bit 1140 of the page control field 1128 may indicate whether the data corresponding to the PDL sequence 1130 is multicast data or unicast data. The bit set 1142 of the page control field 1128 may indicate the number of PDLs in the PDL sequence 1130. An additional bit 1144 of the page control field 1128 may be reserved. In other implementations, the bits in the page control field 1128 may be divided differently.

  [0213] The PDL sequence 1130 may include a PDL 1150. In some implementations, the PDL sequence 1130 may include multiple PDLs. PDL 1150 may include a PDL control field 1152 and a list of devices 1154. The PDL control field 1152 may include a first set of bits 1160, a second set of bits 1162, a third set of bits 1164, and a fourth set of bits 1166. The first set of bits 1160 may indicate the length of the PDL 1150 (or the length of the list of devices 1154). A second set of bits 1162 may indicate the type of data that is scheduled for transmission to devices included in the list of devices 1154. For example, the second set of bits 1162 may indicate voice traffic, packet data traffic, video traffic, or other types of traffic. In some implementations, the second set of bits 1162 indicates a quality of service (QoS) category corresponding to the data. A third set of bits 1164 may indicate the type of PDL 1150 (eg, the type of device list 1154). For example, the third set of bits 1164 may indicate whether the list of devices 1154 is indicated by a TIM, indicated by a Bloom filter, or indicated by a list of MAC addresses. A fourth set of bits 1166 may indicate information regarding the list of devices 1154, as further described herein.

  [0214] To illustrate the indication provided by the third set of bits 1164, if the third set of bits 1164 has a value of 00, the list of devices 1154 is indicated by a list of MAC addresses. If the third set of bits 1164 has a value of 01, the list of devices 1154 is indicated by the Bloom filter. If the third set of bits 1164 has a value of 10, the list of devices 1154 is indicated by the TIM. The values 101-111 of the third set of bits 1164 may be reserved. The fourth set of bits 1166 may indicate different information based on the value of the third set of bits 1164. Illustratively, if the third set of bits 1164 has a value of 00, the fourth set of bits 1164 indicates that the list of devices 1154 includes 6 octets of each MAC address (the entire MAC address), 1 Indicates whether it contains octets, 2 octets, or 4 octets. If the third set of bits 1164 has the value 01, the fourth set of bits 1166 indicates the Bloom filter index of the Bloom filter. If the third set of bits 1164 has the value 10, the fourth set of bits 1166 is a bitmap control field that indicates the offset corresponding to the TIM. Although specific values of the third set of bits 1164 and the fourth set of bits 1166 have been described, the description is not limiting. In other implementations, the indications described above may correspond to different values of the third set of bits 1164 and the fourth set of bits 1166, or the set of bits indicates other information There is.

  [0215] The list of devices 1154 may have a variable size and may indicate a subset of devices that are scheduled to receive traffic from the device sending the SDF 1100. The list of devices 1154 may be indicated by a list of TIMs, Bloom filters, or MAC addresses. The list of devices 1154 may identify each device in the subset of devices described with reference to FIG.

  Accordingly, FIG. 11 illustrates certain attributes that may be included in a frame to indicate a list of devices that are scheduled to receive traffic, such as SDF 1100. If more than one type of traffic is scheduled for transmission, the page attribute 1120 may include multiple PDLs, and each PDL of the multiple PDLs may correspond to a different type of traffic. Thus, different types of traffic may be scheduled for transmission to different devices using one attribute or multiple attributes.

  [0217] Referring to FIG. 12, a diagram of a second illustrative page attribute 1200 including PDL and an illustrative traffic announcement attribute 1230 including PDL is shown. Although page attribute 1200 and traffic announcement attribute 1230 are shown in FIG. 12 as including specific fields, the illustration is not limiting. In other implementations, the frames of the page attributes 1200 or traffic announcement attributes 1230 may be configured in a different order and / or the page attributes 1200 and traffic announcement attributes 1230 may be fewer than those shown in FIG. May contain many frames.

  [0218] Page attributes 1200 and traffic announcement attributes 1230 represent other implementations of attributes that may include a PDL (or a different traffic indicator) for use in paging messages such as paging message 128 of FIG. In some implementations, the first NAN attribute 1112, the second NAN attribute 1114, or both may include either the page attribute 1200 and the traffic announcement attribute 1230 instead of the page attribute 1120 of FIG.

  [0219] The page attribute 1200 may include an attribute ID field 1202. Page attribute 1200 may include a length field 1204 that includes a value that specifies the length of page attribute 1200. The page attribute 1200 may also include a data link group ID field 1206 that includes a value that identifies the data link group. In certain implementations, the particular receiver address value that identifies the message as a paging message may be the value of the data link group ID field 1206. Data link group ID field 1206 may also be referred to as a NAN data link (NDL) identifier.

  [0220] The page attribute 1200 further includes a page control field 1208 and a PDL 1210. The page attribute 1200 optionally includes a traffic type indicator 1212. A page control field 1208 indicates information related to the page attribute 1200. As further described herein, the first set of bits 1220 of the page control field 1208 may indicate the type of list in the paged device list 1210 (eg, the type of traffic indicator). In one particular implementation, the first set of bits 1220 includes 3 bits. A second set 1222 of bits in page control field 1208 may indicate whether traffic type indicator 1212 is included in page attribute 1200. A third set 1224 of bits in the page control field 1208 may be reserved. In other implementations, the bits in the page control field 1208 may be divided differently.

  [0221] To illustrate the indication provided by the first set of bits 1220, if the first set of bits 1220 has a first specific value, transmission by a device that sends a message that includes the page attribute 1200 is illustrated. The scheduled data is multicast data. In certain implementations, the PDL 1210 may not be included in the page attribute 1200 if the data is multicast data. In this case, each device receiving a message including page attribute 1200 enters active operation mode based on detecting that the first set of bits 1220 of page control field 1208 has a first specific value. Can stay. If the first set of bits 1220 has a second specific value, the data may be unicast data and the PDL 1210 may be indicated by the TIM. If the first set of bits 1220 has a third specific value, the data may be unicast data and the PDL 1210 may be indicated by a Bloom filter. If the first set of bits 1220 has a fourth specific value, the data may be unicast data and the PDL 1210 may be indicated by a list of MAC addresses. If the first set of bits 1220 has a fifth specific value, the first set of bits 1220 indicates that a new common group key (CGK) has been generated by the device in the data link group. In this case, if the PDL 1210 includes the MAC address (or other identifier) of the device that generated the CGK and the traffic type indicator 1212 is included in the page attribute 1200, the traffic type indicator 1212 indicates the highest priority traffic type. . For example, the traffic type indicator 1212 may indicate the highest QoS category that corresponds to the traffic.

  [0222] The PDL 1210 may have a variable size and may indicate a subset of devices that are scheduled to receive traffic from a particular device. PDL 1210 may be indicated by a list of TIMs, Bloom filters, or MAC addresses. The PDL 1210 may identify each device in the subset of devices described with reference to FIG.

  [0223] The traffic announcement attribute 1230 may include an attribute ID field 1232. The traffic announcement attribute 1230 may include a length field 1234 that includes a value that specifies the length of the traffic announcement attribute 1230. The traffic announcement attribute 1230 may also include a data link group ID field 1236 that includes a value that identifies the data link group. In certain implementations, the particular receiver address value that identifies the message as a paging message may be the value of the data link group ID field 1236. Data link group ID field 1236 may also be referred to as an NDL identifier.

  [0224] The traffic announcement attribute 1230 further includes a PDL 1238. PDL 1238 may be represented by a type length value (TLV) field. The type field of the TLV field may indicate the type of PDL 1238, such as a TIM, Bloom filter, or a list of MAC addresses. The length field of the TLV field may indicate the length of the value field of the TLV field. The value field contains a list of devices. In some implementations, the traffic announcement attribute 1230 also includes a traffic type indicator that indicates the type of traffic that is scheduled for transmission to the PDL 1238 device.

  [0225] Accordingly, FIG. 12 shows two attributes that may be included in a frame to indicate a list of devices that are scheduled to receive traffic, such as SDF or management frames. If more than one type of traffic is scheduled for transmission, the frame may include multiple attributes, each attribute of the multiple attributes corresponding to a different type of traffic. For example, the frame may include multiple page attributes 1200 or multiple traffic announcement attributes 1230. A device receiving a frame may process multiple attributes to determine whether the traffic is scheduled for transmission and the type of traffic that is scheduled.

  [0226] Referring to FIG. 13, a particular implementation of the method of operation is shown and designated generally as 1300. In certain implementations, the method 1300 may be performed by the provider logic 130 of at least one of the devices 104, 106, 108, and 110 of the system 100 of FIG.

  [0227] At 1302, the method 1300 includes receiving availability information from a second device at a first device during a connection setup phase of NAN communication (or during a NAN discovery window). The connection setup phase includes the exchange of device capability information. For example, referring to FIG. 1, a first device 104 (eg, a provider device) may receive a second device 106 (eg, a subscriber device) during an association phase of NAN 102 communication that includes the exchange of capability information 114. The availability information 116 may be received from In some implementations, the connection setup phase includes an association phase. In other implementations, the connection setup phase includes a negotiation phase. In certain implementations, the second device 106 participates in a data link group during the association phase, and the data link group includes the first device 104 and one or more other devices.

  [0228] At 1304, method 1300 includes sending a paging message that includes a traffic indicator during a paging window. The traffic indicator identifies the second device as being scheduled to receive data. For example, referring to FIG. 1, the first device 104 may send a paging message 128 to the second device 106 during the paging window. The paging message 128 may include a traffic indicator that identifies the second device 106 as scheduled to receive data. As a non-limiting example, the traffic indicator may include a traffic indication map (TIM), a bloom filter, a list of media access control (MAC) addresses, a list of partial MAC addresses, or a list of hashes of MAC addresses.

  [0229] At 1306, the method 1300 determines whether to perform a message exchange to determine the availability of the second device prior to transmitting the data during the transmission window based on the availability information. Including determining. For example, referring to FIG. 1, the first device 104 transmits data 122 to the second device during the transmission window based on the availability information 116 received from the second device 106 during the association phase. It may be determined whether to wait to receive a trigger frame 182 from the second device 106 before doing so. As another example, referring to FIG. 1, the first device 104 can determine whether the PS-POLL message, quality of service (QoS) null message (or quality of service (QoS) null frame), ATIM message based on the availability information 116. May determine whether the availability of the second device should be determined by sending an action frame or another unicast message. In some implementations, the data 122 may be transmitted during the data window. In other implementations, the data 122 may be transmitted prior to the start of the data window, such as during a paging window or a trigger window.

  [0230] In the particular implementation shown in FIG. 13, the method 1300 includes, in 1308, availability information (NAN association phase) that the second device is available during the transmission window of the NAN data link group. In response to determining that the second device has received the second device from the first device during the transmission window without performing a message exchange to determine the availability of the second device. Including sending data to the device. For example, referring to FIG. 1, the availability information 116 is dedicated to the second device 106 being available for communication during the data window of the NAN 102 (eg, “always available”). Can be provided to the first device 104, such as via a polling mechanism or trigger mechanism before transmitting the data 122 to the second device 106 (during the transmission window). It may refrain from performing a message exchange to determine the availability of the second device 106.

  [0231] FIG. 13 further illustrates that in response to determining that the availability information does not indicate the availability of the second device during the transmission window, the method 1300 before transmitting the data at 1310, the second Indicates that the device may include performing a message exchange to determine that the device is available. For example, referring to FIG. 1, the availability information 116 is not dedicated to the second device 106 being available for communication during the transmission window of the data link group of the NAN 102 (eg, not available “always”). 1) or an indication that the second device 106 is “preferred” to respond with an availability indication for being polled and receiving data 122 during the transmission window. Device 104 may be provided. In this case, the first device 104 can poll the second device 106 and wait for a response from the second device 106 before sending the data 122. As another example, the second device 106 “likes” the second device 106 to transmit a trigger frame to provide an indication of availability for receiving data 122 during the transmission window. Can provide instructions.

  [0232] In certain implementations, the availability information may include a specific field having a single bit, and the value of the specific field may be the value of the data window of the data link group of the second device NAN. Indicates whether it is available in between. For example, the instruction 162 of FIG. 1 may identify dedicated availability (or unavailability) via the bit value of a particular bit in the instruction 162. Additionally or alternatively, the availability information may include a specific bit field having a plurality of bits, and the value of the specific bit field is a value for each data window corresponding to the data link group that includes the first device. Indicates whether the second device is available during For example, the availability information 116 of FIG. 1 includes a plurality of bits and indicates an indication corresponding to an “always available” status, a “preferred to be polled” status, or a “preferred to send trigger frame” status. It can be a field to provide.

  [0233] Accordingly, FIG. 13 illustrates that message traffic during the NAN transmission window may be reduced based on availability information provided during the association phase of the NAN communication. In FIG. 13, the provider device determines the availability of the subscriber device if the subscriber device provides an indication that the subscriber device is available during the data link group data window of the NAN. Message exchanges can be refrained from being performed, resulting in a reduction in message traffic, such as traffic associated with polling messages or trigger frames. Instead, the provider device can send a paging message (during the paging window) that includes a traffic indicator that identifies the subscriber device as the recipient of the data, and before sending the data (during the data window) B) may refrain from performing a message exchange to determine the availability of the second device.

  [0234] Referring to FIG. 14, a particular aspect of the method of operation is shown, generally designated 1400. In certain implementations, the method 1400 may be performed by the subscriber logic 134 of at least one of the devices 104, 106, 108, and 110 of the system 100 of FIG.

  [0235] At 1402, the method 1400 includes sending availability information from the first device to the second device during a connection setup phase of NAN communication (or during a NAN discovery window). The connection setup phase includes the exchange of device capability information, and the availability information indicates the availability of the first device during the transmission window of the NAN data link group. For example, referring to FIG. 1, a second device 106 (eg, a subscriber device) may receive a first device 104 (eg, a provider device) during an association phase of NAN 102 communication that includes the exchange of capability information 114. The availability information 116 may be transmitted to In some implementations, the connection setup phase includes an association phase. In other implementations, the connection setup phase includes a negotiation phase.

  [0236] At 1404, method 1400 includes receiving a paging message from a second device during a paging window at a first device. The paging message includes a traffic indicator that identifies the first device as receiving data. For example, referring to FIG. 1, the second device 106 may receive a paging message 128 from the first device 104 during a paging window. The paging message 128 may include a traffic indicator that identifies the second device 106 as scheduled to receive data. As a non-limiting example, a traffic indicator may include a list of traffic indication maps (TIM), bloom filters, and medium access control (MAC) addresses.

  [0237] FIG. 14 further illustrates that in response to determining that the availability information indicates that the first device is available during the transmission window of the data link group, the method 1400 at 1406, the second Indicates that it may include refraining from performing a message exchange to provide an indication of availability to the device. For example, referring to FIG. 1, in response to determining that the availability information 116 of the second device 106 indicates that the second device 106 is available during the transmission window of the data link group of the NAN. The second device 106 may refrain from sending an availability indication (eg, a response to a polling message or trigger frame from the first device 104) to the first device 104. In response to determining that the availability information does not indicate that the first device is available during the transmission window, the method 1400, at 1408, a message for providing an indication of availability to the second device. Performing an exchange may be included. For example, referring to FIG. 1, if the availability information 116 of the second device 106 does not indicate the availability of the second device 106 during the transmission window, the second device 106 indicates an availability indication to the first device 104. Can be sent.

  [0238] In the particular implementation shown in FIG. 14, at 1410, the method 1400 may further include receiving data from the second device during the transmission window at the first device. For example, referring to FIG. 1, in response to determining that the availability information 116 of the second device 106 indicates that the second device 106 is available during the data window of the data link group. The second device 106 may receive data from the first device 104 during the transmission window without performing a message exchange to provide an indication of availability to the second device 106. In some implementations, the second device 106 may receive data from the first device 104 during the data window. In other implementations, the second device 106 may receive data from the first device 104 prior to the start of the data window, such as during a paging window or a trigger window.

  [0239] In certain implementations, the method 1400 may further include performing an association with the second device during the connection setup phase. For example, referring to FIG. 1, the second device 106 may participate in a data link group during the NAN 102 communication association phase, including the exchange of capability information 114. Additionally or alternatively, the availability information may include a specific field value or a specific bit value, and the specific field value or specific bit value is available to the second device during the transmission window May indicate whether or not. For example, the instruction 162 of FIG. 1 may identify availability (or unavailability) via a particular field in the instruction 162 or a bit value of a particular bit. In addition or alternatively, the availability information may include a specific bit field having a plurality of bits, and the value of the specific bit field is between each data window of the data link group that includes the first device. Shows a second weather device available. For example, the availability information 116 of FIG. 1 includes a plurality of bits and indicates an indication corresponding to an “always available” status, a “preferred to be polled” status, or a “preferred to send trigger frame” status. It can be a field to provide.

  [0240] Accordingly, FIG. 14 illustrates that message traffic during the transmission window of the NAN may be reduced based on availability information provided during the association phase of the NAN communication. In FIG. 14, the subscriber device may provide an indication of availability during the association phase. The provider device can send a paging message (during the paging window) that includes a traffic indicator that identifies the subscriber device as a recipient of the data, and the subscriber device receives the data during the data window. Can refrain from performing message exchanges to provide an indication of the availability of subscriber devices to that, resulting in a reduction in message traffic, such as traffic associated with responses to polling messages or trigger frames.

  [0241] Referring to FIG. 15, a particular aspect of the method of operation is shown, generally designated 1500. In certain implementations, the method 1500 may be performed by the provider logic 130 of at least one of the devices 104, 106, 108, and 110 of the system 100 of FIG.

  [0242] At 1502, the method 1500 includes, at a first device, a first time during a particular time period that is configured to operate devices in a neighbor aware network (NAN) data link group in an active mode of operation. Generating a message including an indication of whether the device is available. For example, referring to FIG. 1, the provider logic 130 of the first device 104 can generate a paging message 128 or service advertisement 120, and the paging message 128 or service advertisement 120 can be generated by the first device 104 at a specific time. It can be shown that it is available for a period of time.

  [0243] The method 1500 further includes, at 1504, sending a message from the first device to one or more devices in the data link group. For example, referring to FIG. 1, the first device 104 can send a paging message 128 to the second device 106, or the first device 104 can send a service advertisement 120 to the second device 106 and the third device 106. To the device 108.

  [0244] In certain implementations, the message includes a service advertisement, the message is transmitted during a NAN discovery window, and the particular time period is one or more times between a pair of NAN discovery windows. Including the period. The NAN devices may be configured to operate in an active mode of operation during the discovery window, and the NAN devices may include data link group devices. Illustratively, the first device 104 may send a service advertisement 120 to the second device 106 and the third device 108 during the discovery window of the NAN 102, with two consecutive discovery windows for a particular time period. May include a time period between. Alternatively, the message includes a paging message, the message is transmitted during the paging window of the data link group, and the particular time period includes one or more data windows between the pair of paging windows. Data link group devices may be configured to operate in an active mode of operation during a paging window. Illustratively, the first device 104 may send a paging message 128 to the second device 106 during a paging window corresponding to the data link group of the NAN 102, with a specific time period between the paging window and the next May include a data window between the paging window.

  [0245] In some implementations, at least a portion of a particular time period is identified by multiple logical channels. Each of the plurality of logical channels may correspond to a communication channel and at least one time period. For example, service advertisement 120 may indicate logical channel 150 or paging message 128 may indicate the next N logical channels 164. In these examples, the multiple logical channels may be represented by several logical channels, such as the next N logical channels. Each logical channel may correspond to (or represent) a particular time period and a portion of the communication channel. As an example, the first logical channel may correspond to the first time period and the first communication channel, the second logical channel corresponds to the second time period and the first communication channel, and the third The logical channel corresponds to the third time period and the second logical channel. In addition, the paging message may be transmitted from the first device to one or more devices during the paging window portion of the transmission window corresponding to the first logical channel. In some implementations, the transmission window (eg, the time between the beginning of the paging window and the end of the data window) is also referred to as a NAN data link time block (NDL-TB). In at least one implementation, the first logical channel corresponds to a basic communication channel. In another particular implementation, the first logical channel may correspond to an auxiliary communication channel of the plurality of auxiliary communication channels referenced by the logical channel index. In addition, the plurality of logical channels may represent communication channels, and the communication channel indication may follow the auxiliary communication channel indication in the logical channel index. In certain implementations, if the message includes a particular set of bits having a first value, this indication identifies an unavailability and the particular set of bits has a second value that is different from the first value. If so, this indication specifies availability. For example, the indication 162 may include a field or a specific bit having a value indicating whether the first device 104 is available or unavailable. Additional details of sending a message indicating availability associated with a logical channel are described with reference to FIG.

  [0246] Referring to FIG. 16, a particular aspect of the method of operation is shown and designated generally as 1600. In certain implementations, the method 1600 may be performed by the provider logic 130 of at least one of the devices 104, 106, 108, and 110 of the system 100 of FIG. In some cases, if the availability information 116 received from a particular device during the association phase of the communication of the NAN 102 indicates that the particular device is not “always” available for communication during the data window, Method 1600 may be performed.

  [0247] At 1602, method 1600 includes generating a paging message that includes an indication of unavailability for the next N logical channels at the provider device. For example, referring to FIG. 1, the provider logic 130 of the first device 104 can generate a paging message 128, and the indication 162 included in the paging message 128 is the first for the next N logical channels 164. Represents an indication of device 104 unavailability. That is, as further described with respect to FIG. 2, the paging message 128 shown in FIG. 1 may represent a paging (traffic) announcement over the first logical channel, and the unavailability indication 162 may be It may represent another logical channel following the first logical channel in the logical channel index for the data link group.

  [0248] As a non-limiting example for illustration, the first logical channel may represent the first logical channel in the index, and the indication 162 indicates that the first device 104 is in the next four logical channels. May be specified as unavailable to the user (ie, N = 4). In this example, the first device 104 may not be available from the first logical channel in the index to the fifth logical channel in the index. In certain implementations, the indication 162 may identify an unavailability via a bit value (eg, 0) for a particular bit in the indication 162. For example, to indicate that the first device 104 is not available for the next N logical channels 164, the indication may include [0, N], where N is an integer value ( For example, 4) in the case of unavailability for the next four logical channels, and a particular bit has a first bit value (eg, 0). However, it should be understood that alternative methods of identifying unavailability can be used.

  [0249] The method 1600 also includes, at 1602, transmitting a paging message from the provider device to one or more subscriber devices of a data link group of a neighbor aware network (NAN). For example, referring to FIG. 1, the first device 104 may transmit a paging message 128 to at least the second device 106. That is, the first device 104 may operate as a service provider that provides a service, and the second device 106 may operate as a subscriber device that subscribes to the service. In some cases, in response to receiving the unavailability indication 162, the subscriber logic 134 of the second device 106 moves the N logical channels 164 next to the logical channel 150 of the particular data link group. You can refrain from monitoring. In another implementation, the second device 106 may perform one or more operations associated with another data link group.

  [0250] Referring to FIG. 17, a particular aspect of the method of operation is shown and designated generally as 1700. In certain implementations, the method 1700 may be performed by the provider logic 130 of at least one of the devices 104, 106, 108, and 110 of the system 100 of FIG.

  [0251] The method 1700, at 1702, at a second device of a data link group of a neighbor aware network (NAN) for a specified time period configured to operate the device of the data link group in an active mode of operation. Receiving a message including an indication of whether a first device corresponding to a particular service is available. For example, referring to FIG. 1, the second device 106 may receive a paging message 128 or service advertisement 120 from the first device 104. The paging message 128 or service advertisement 120 may include an indication of whether the first device 104 is available for a particular time period. This particular time period may be a time period known to or detectable by data link group or NAN devices. As one example, a particular time period may be represented by a particular logical channel, which identifies a particular communication channel and a particular time period.

  [0252] The method 1700 further includes, in 1704, one or more corresponding to the particular time period in response to determining that the first device is unavailable during the particular time period. Transitioning to a low power mode of operation during the transmission window. For example, referring to FIG. 1, the second device 106 responds to determining that the paging message 128 or service advertisement 120 indicates that the first device 104 is unavailable during a particular time period. Thus, it may transition to a low power mode of operation during one or more windows corresponding to a particular time period.

  [0253] In certain implementations, the method 1700 may be utilized by other devices during a particular time period before transitioning to a low power mode of operation when the second device is peered with another device. Including determining it is impossible. For example, if the second device 106 is peered with another device, such as the fourth device 110, the second device 106 is also unavailable to the fourth device 110 before transitioning to a low power mode of operation. Can be determined. The second device 106 may be peered with the fourth device 110 by performing a connection setup operation such as an association operation or a negotiation operation.

  [0254] In one specific implementation, the message includes a service advertisement, and the specific time period corresponds to the discovery window of the NAN. The NAN devices may be configured to operate in an active mode of operation during the discovery window, and the NAN devices may include data link group devices. Illustratively, the second device 106 may receive a service advertisement 120 from the first device 104 during the discovery window of the NAN 102. Alternatively, the message may include a paging message. Data link group devices may be configured to operate in an active mode of operation during a paging window. Illustratively, the second device 106 may receive a paging message 128 from the first device 104 during a paging window corresponding to the data link group of the NAN 102.

  [0255] In certain implementations, the method 1700 further includes, at a second device, a first particular time period for a second particular time period that is configured to operate devices in the data link group in an active mode of operation. Receiving a second message that includes a second indication of whether the device is available. Method 1700 may also include performing one or more operations associated with different devices corresponding to another service during one or more transmission windows corresponding to the second particular time period. For example, the second device 106 may perform an operation associated with a different provider device than the first device 104 instead of transitioning to a low power mode of operation.

  [0256] In some implementations, at least a portion of the second specific time period is specified by a plurality of logical channels. Each of the plurality of logical channels corresponds to a portion of a communication channel and a particular time period. For example, service advertisement 120 may indicate logical channel 150 or paging message 128 may indicate the next N logical channels 164. In these examples, multiple logical channels are represented by several logical channels, such as the next N logical channels 164. Each logical channel may correspond to (or represent) a specific time period and a specific communication channel. As an example, the first logical channel may correspond to the first time period and the first communication channel, and the second logical channel may correspond to the second time period and the first communication channel. The third logical channel may correspond to the third time period and the second logical channel. In some implementations, the first logical channel may correspond to a basic communication channel. In another particular implementation, the first logical channel may correspond to an auxiliary communication channel of the plurality of auxiliary communication channels referenced by the logical channel index. In addition, the plurality of logical channels may represent a communication channel and a time period, and the communication channel indication may follow the auxiliary communication channel indication in the logical channel index. Additional details of receiving a message indicating availability associated with a logical channel are described with reference to FIG.

  [0257] Referring to FIG. 18, a particular aspect of the method of operation is shown and designated generally as 1800. In certain implementations, the method 1800 may be performed by the subscriber logic 134 of at least one of the devices 104, 106, 108, and 110 of the system 100 of FIG. In some cases, if the availability information 116 received from a particular device during the association phase of the communication of the NAN 102 indicates that the particular device is not “always” available for communication during the data window, Method 1800 may be performed.

  [0258] At 1802, method 1800 includes an indication of provider device unavailability associated with a specific service for the next N logical channels at a subscriber device of a data link group of a neighbor aware network (NAN). Including receiving a paging message. For example, referring to FIG. 1, the second device 106 can operate as a subscriber device that subscribes to a service, and the first device 104 can operate as a service provider that provides a particular service. The subscriber logic 134 of the second device 106 can receive the paging message 128 from the first device 104, and the indication 162 included in the paging message 128 indicates the first device 104 for the next N logical channels 164. Represents an indication of unavailability. That is, as further described with respect to FIG. 2, the paging message 128 shown in FIG. 1 may represent a paging (traffic) announcement over the first logical channel, and the unavailability indication 162 may be It may represent another logical channel following the first logical channel in the logical channel index for the data link group.

  [0259] The method 1800 may also transition at 1804 to a low power mode of operation for the next N logical channels, or another service during one or more of the next N logical channels. Performing one or more operations associated with another provider device associated with the.

  [0260] In certain implementations, the second device 106 powers down to stay in a low power mode of operation and wakes up to monitor the next N logical channels 164 (including the paging window). You can refrain from doing. As a non-limiting example for illustration and with reference to FIG. 4, the second device 106 is not responsible for the next N logical channels 164 in the paging window 324 of the transmit window 322 associated with the basic communication channel 306. A paging message 128 that includes an availability indication 162 may be received. That is, the second device 106 may receive the paging message 128 during the time period starting at t2 and ending at t3. As an illustrative example, the indication 162 may indicate that the first device 104 is unavailable for the next four logical channels (ie, N = 4 in this case). Referring to FIG. 3, the second device 106 refrains from monitoring the first auxiliary channel 308 during the first paging window 332 (starting at t5 and ending at t6), and the first paging window Refrain from monitoring the second auxiliary channel 310 during 344 (starting at t8 and ending at t9) and first auxiliary during the second paging window 336 (starting at t11 and ending at t12). You may refrain from monitoring channel 308 and refrain from monitoring the first auxiliary channel 308 during the second paging window 342 (starting at t14 and ending at t15).

  [0261] As another example, referring to FIG. 5, the second device 106, in a first paging window 332 associated with the first auxiliary channel 308, may have an unavailability for the next N logical channels 164. A paging message 128 including an instruction 162 may be received. That is, the second device 106 may receive the paging message 128 during the time period starting at t5 and ending at t6. As an illustrative example, the indication 162 may indicate that the first device 104 is unavailable for the next four logical channels (ie, N = 4 in this case). Referring to FIG. 3, the second device 106 refrains from monitoring the second auxiliary channel 310 during the first paging window 344 (starting at t8 and ending at t9), and the second paging window Refrain from monitoring the first auxiliary channel 308 during 336 (starting at t11 and ending at t12) and second auxiliary during the second paging window 348 (starting at t14 and ending at t15). It may refrain from monitoring channel 310. Further, although not shown in FIG. 3, the second device 106 may refrain from monitoring the first auxiliary channel 308 during the first paging window that occurs after the second discovery window 314. . That is, in some cases, the second device 106 may refrain from monitoring one or more auxiliary channels associated with other discovery periods after the discovery period 316 shown in FIG.

  [0262] In another implementation, the second device 106 may include one or more associated with another provider device associated with another service during one or more of the next N logical channels. The operation can be performed. For example, if the second device 106 subscribes to multiple providers, the second device 106 schedules a power saving operation or a simultaneous operation based on the common portion of unavailability associated with each of the multiple providers. be able to. As a non-limiting example for illustration, the second device 106 may subscribe to two providers, such as the first device 104 and another device. Depending on when both provider devices indicate unavailability, the second device 106 may schedule one or more power saving operations, one or more simultaneous operations, or a combination thereof.

  [0263] By way of example, referring to FIG. 4, the second device 106 may provide an availability indication 162 for the next N logical channels 164 in the paging window 324 of the transmission window 322 associated with the basic communication channel 306. A paging message 128 may be received. In this case, the second device 106 may perform one or more operations associated with another data link group during one or more of the next N logical channels 164 (ie, in this case). N = 4). That is, the second device 106 is associated with the first transmission window 328 associated with the first auxiliary channel 308, the first transmission window 340 associated with the second auxiliary channel 310, and the first auxiliary channel 308. One or more operations may be performed during the second transmission window 330, the second transmission window 342 associated with the second auxiliary channel 310, or a combination thereof.

  [0264] As another example, referring to FIG. 5, the second device 106, in a first paging window 332 associated with the first auxiliary channel 308, may have an unavailability for the next N logical channels 164. A paging message 128 including an instruction 162 may be received. In this case, the second device 106 may perform one or more operations associated with another data link group during one or more of the next N logical channels 164 (ie, in this case). N = 4). That is, the second device 106 is associated with the first transmission window 328 associated with the first auxiliary channel 308, the first transmission window 340 associated with the second auxiliary channel 310, and the first auxiliary channel 308. During the second transmission window 330, the second transmission window 342 associated with the second auxiliary channel 310, or a combination thereof, one or more operations associated with another data link group may be performed. Further, although not shown in FIG. 3, the second device 106 may include one or more associated with another data link group during a first paging window that occurs after the second discovery window 314. An action can be performed. That is, in some cases, the second device 106 may refrain from monitoring one or more auxiliary channels associated with other discovery periods after the discovery period 316 shown in FIG.

  [0265] Referring to FIG. 19, a particular aspect of the method of operation is illustrated and designated generally as 1900. In certain implementations, the method 1900 may be performed by the provider logic 130 of at least one of the devices 104, 106, 108, and 110 of the system 100 of FIG. In some cases, if the availability information 116 received from a particular device during the association phase of communication of the NAN 102 indicates that the particular device is not “always” available for communication during the data window, Method 1900 may be performed.

  [0266] At 1902, the method 1900 includes generating a paging message at a first device. For example, referring to FIG. 1, the provider logic 130 of the first device 104 may generate a paging message 128. In some implementations, the paging message may include an indication of availability for a particular time period corresponding to a data link group of a neighbor aware network (NAN). For example, the indication 162 included in the paging message 128 represents an indication of the availability of the first device 104 for a particular time period. A particular time period may correspond to the next N logical channels 164. That is, as further described with respect to FIG. 2, the paging message 128 shown in FIG. 1 may represent a paging (traffic) announcement over the first logical channel, and the availability indication 162 may include specific data It may represent another logical channel that follows the first logical channel in the index of the logical channel for the link group.

  [0267] As a non-limiting example for illustration, the first logical channel may represent the first logical channel in the index, and the indication 162 indicates that the first device 104 is in the next four logical channels. It can be specified that it is available to the user (ie, N = 4). In this example, the first device 104 may be available from the first logical channel in the index to the fifth logical channel in the index. In certain implementations, the indication 162 may specify availability via a bit value (eg, 1) of a particular bit in the indication 162. For example, to indicate that the first device 104 is available for the next N logical channels 164, the indication may include [1, N], where N is an integer value (eg, 4) for availability for the next four logical channels, a particular bit has a second bit value (eg, 1). However, it should be understood that alternative methods of specifying availability can be used.

  [0268] The method 1900 also includes, at 1904, sending a paging message from the first device to one or more devices in a group of neighbor aware networks (NANs) (eg, a data link group). For example, referring to FIG. 1, the first device 104 may transmit a paging message 128 to at least the second device 106 during the first transmission window of the group. In this example, the first device 104 may operate as a service provider that provides a service, and the second device 106 may operate as a subscriber device that subscribes to the service. As further described with respect to FIG. 2, the paging message 128 shown in FIG. 1 may represent a paging (traffic) announcement over the first logical channel, and the availability indication 162 may include a specific data link group May represent other logical channels following the first logical channel in the logical channel index for.

  [0269] At 1906, the method 1900 also determines, at the first device, whether one or more acknowledgments (ACKs) have been received from each of the one or more subscriber devices of the NAN data link group. Including determining. That is, the first device 104 may wait to receive an acknowledgment from the subscriber device indicating receipt of the availability indication 162. As a non-limiting example for illustration, the first device 104 may provide an availability indication 162 for the next four logical channels (ie, N = 4). For example, referring to FIG. 4, the indication 162 may be provided via a paging message 128 during the paging window 324 associated with the transmission window 322 of the basic communication channel 306. Alternatively, as described with respect to FIGS. 5-8, the indication 162 may be a paging window between the paging windows 332, 336 associated with the first auxiliary channel 308 or associated with the second auxiliary channel 310. 344, 348 may be provided via a paging message 128.

  [0270] As a simplified example, the second device 106 may represent a single subscriber for services provided by the first device 104. In this example, the first device 104 determines at 1906 whether an acknowledgment, such as a PS-POLL message, was received from the second device 106 during a particular paging window associated with the first logical channel. Can do. Illustratively, referring to FIG. 4, the first device 104 indicates an availability indication for the next four logical channels via a paging message 128 during the paging window 324 associated with the transmission window 322 of the basic communication channel 306. 162 may be provided (ie, N = 4). In this example, the first device 104 may determine at 1906 whether an acknowledgment (ACK) of the availability indication 162 was received from the second device 106 during the paging window 324.

  [0271] The method 1900, at 1908, directs data traffic to a particular device of one or more devices without sending a traffic announcement to the particular device during the second paging window of the second transmission window. May include transmitting. At least a portion of the data traffic may be transmitted during the second transmission window of the group and before the data window of the second transmission window. For example, at least a portion of the data traffic may be transmitted during the paging window portion of the second transmission window or during the trigger window portion of the second transmission window. As shown in FIG. 19, data traffic is transmitted at the first device based on detecting receipt of one or more acknowledgments from each of one or more devices of the data link group. obtain. The second transmission window may include or correspond to the next N logical channels.

  [0272] If an ACK has not been received from the second device 106 during the paging window 324, at 1912, the method 1900 can cause a reduced number of times at the first device (eg, the first device 104). Generating a second paging message including an indication of availability for the logical channel may be included. The reduced number of logical channels may be the next N-1 logical channels. For example, the indication may include [1, N−1], where N−1 is an integer value (eg, 3 in this example when N = 4).

  [0273] The method 1900 may return to 1904, at which the provider device sends a second paging message to devices in the data link group. For example, referring to FIG. 5, the indication 162 may be provided via a paging message 128 during the first paging window 324 of the first transmission window 328 associated with the first auxiliary channel 308. In the simplified example where the second device 106 represents a single subscriber device for a particular service provided by the first device 104, the first device 104, at 1906, the first auxiliary channel 308. During the first paging window 324 of the first transmission window 328 associated with, it may be determined whether an acknowledgment to the second paging message has been received from the second device 106.

  [0274] Method 1900, in response to determining that one or more acknowledgments to the second paging message have been received, reduces the number of logical channels (next N-1 logical channels). ) To refrain from sending traffic announcements in the paging window corresponding to. Further, the method 1900 may include, at 1910, transmitting data traffic in at least a portion of the paging window in the reduced number of logical channels (next N-1 logical channels). If an ACK has not been received from the second device 106 during the first paging window 324, the method 1900 can proceed to 1912 where the ACK is received from each of the devices in the data link group of the NAN. Until it is done, it may continue to generate paging messages.

  [0275] In certain implementations, the method 1900 further initiates a first countdown during the paging window based on the first contention parameter before generating the paging message; Initiating a second countdown during the paging window based on the contention parameter. The second contention parameter may correspond to a longer time period than the first contention parameter. Illustratively, referring to FIG. 9, a first countdown may be initiated based on the parameter CW_paging, and a second countdown may be initiated based on the parameter FixedCW_data_min. FixedCW_data_min corresponds to a longer time period than CW_paging. In addition, the method 1900 further includes transmitting a paging message to one or more devices in response to the first countdown expiration, and transmitting data traffic in response to the second countdown expiration. Can be included. In addition or alternatively, the paging message may include a first traffic category field and the data frame of the data traffic may include a second traffic category field. In one case, the value of the first traffic category field corresponds to a higher priority than the value of the second traffic category field. For example, referring to FIG. 9, the paging message may include a first traffic category field having a higher priority than a second traffic category field included in the data frame. In addition, the first traffic category field and the second traffic category field may include a quality of service (QoS) category field. In another particular implementation, the method 1900 may include transmitting data during a trigger window, as further described with reference to FIG.

  [0276] Referring to FIG. 20, a particular aspect of the method of operation is shown, designated generally 2000. In certain implementations, the method 2000 may be performed by at least one subscriber logic 134 of the devices 104, 106, 108, and 110 of the system 100 of FIG. In some cases, if the availability information 116 received from a particular device during the association phase of the communication of the NAN 102 indicates that the particular device is not “always” available for communication during the data window, Method 2000 may be performed.

  [0277] At 2002, the method 2000 may monitor, at a second device of a data link group of a neighbor aware network (NAN), monitoring a particular communication channel corresponding to the data link group during a first time period. Including. A particular logical channel may represent or correspond to a particular time period and a particular logical channel. Illustratively, referring to FIG. 1, the second device 106 can operate as a subscriber device that subscribes to a service, and the first device 104 can operate as a service provider that provides a particular service. . As further described with respect to FIG. 2, a particular logical channel may represent one of the logical channels referenced by the index of the logical channel associated with the data link group. The subscriber device 134 of the second device 106 may monitor a particular communication channel during a paging window corresponding to the particular logical channel.

  [0278] At 2004, the method 2000 also includes, at the second device, receiving a paging message from the first device corresponding to the particular service. For example, referring to FIG. 1, the subscriber logic 134 of the second device 106 may receive a paging message 128 from the first device 104. In some implementations, the paging message includes an indication of provider device availability for the next N logical channels. For example, the indication 162 included in the paging message 128 represents an indication of the availability of the first device 104 for the next N logical channels 164. That is, the paging message 128 shown in FIG. 1 may represent a paging (traffic) announcement over a specific logical channel, and the availability indication 162 may be a specific logical index in the logical channel index for the data link group. It may represent another logical channel that follows the channel.

  [0279] As an illustrative and non-limiting example, referring to FIG. 4, the subscriber logic 134 of the second device 106 paging during a paging window 324 associated with the transmission window 322 of the basic communication channel 306. Message 128 may be received. That is, as described with respect to FIG. 2, the paging message 128 may be received during a paging window associated with the basic communication channel referenced by the logical channel index. Alternatively, as described with reference to FIGS. 5-8, the paging message 128 may be received during a paging window associated with one of the auxiliary channels referenced by the logical channel index. For example, referring to FIGS. 5 and 7, the subscriber logic 134 of the second device 106 may receive the first auxiliary channel 308 during the first paging window 332 associated with the first transmission window 328 or the first auxiliary channel 308. During the second paging window 336 associated with the second transmission window 330, the paging message 128 may be received. As another example, referring to FIGS. 6 and 8, the subscriber logic 134 of the second device 106 may be configured during a first paging window 344 associated with a first transmission window 340 or a second A paging message 128 may be received during a second paging window 348 associated with the second transmission window 342 of the auxiliary channel 310.

  [0280] The method 2000 also includes, at 2006, transmitting an acknowledgment, such as a power save poll (PS-POLL) message, from the second device to the first device. For example, referring to FIG. 1, the subscriber logic 134 of the second device 106 may send an acknowledgment to the first device 104. At 2008, method 2000 further includes monitoring a first logical channel of the plurality of logical channels corresponding to the data link group at the second device. The method 2000 may also include, at 2010, receiving data traffic at the second device from the first device prior to the start of the data window corresponding to the first logical channel. In some implementations, data traffic may be received during at least a portion of the paging window. In other implementations, data traffic may be received during at least a portion of the trigger window. In other implementations, a paging message may be received during a paging window, and method 2000 may include transmitting a trigger frame during the paging window and before the data window. To illustrate, the various frames are transmitted in order of priority so that the paging message has the highest priority, the trigger frame has a lower priority than the paging message, and the data frame has a lower priority than the trigger frame. obtain. For example, contention window values can be used to control the priority of various frames. In another example, traffic categories can be used to control the priority of various frames.

  [0281] By way of example, referring to FIG. 3, the subscriber logic 134 of the second device 106 transmits an ACK to the first device 104 during the paging window 324 associated with the transmission window 322 of the basic communication channel 306. Can do. In this example, the first logical channel referenced by the logical channel index may be the first auxiliary channel 308. As used herein with reference to FIG. 20, the “first” logical channel may not be the first logical in order referenced by the logical channel index. Accordingly, the second device 106 may monitor the first auxiliary channel 308 during the first paging window 332 associated with the first transmission window 328. Further, the second device 106 may receive data traffic from the first device 104 during the first paging window 332. Accordingly, the availability indication received from the first device 104 during the paging window 324 may allow data transfer between the paging portion of the transmission window associated with the first logical channel. For example, data transfer may occur during the first paging window 332 of the first transmission window 328 associated with the first auxiliary channel 308.

  [0282] As another example, referring to FIG. 3, the subscriber logic 134 of the second device 106 is in between the first paging window 332 associated with the first transmission window 328 of the first auxiliary channel 308. ACK may be sent to the first device 104. In this case, the first logical channel referenced by the logical channel index may be the second auxiliary channel 310. The next logical channel may represent the next auxiliary channel following the first auxiliary channel 308 in the logical channel index. Accordingly, the second device 106 may monitor the second auxiliary channel 310 during the first paging window 344 associated with the first transmission window 340. Further, the second device 106 may receive data traffic from the first device 104 during the first paging window 344.

  [0283] As a further example, referring to FIG. 3, the subscriber logic 134 of the second device 106 during the first paging window 344 associated with the first transmission window 340 of the second auxiliary channel 310. An ACK may be sent to the first device 104. In this case, the first logical channel referenced by the logical channel index may be the first auxiliary channel 308. Accordingly, the second device 106 may monitor the first auxiliary channel 308 during the second paging window 336 associated with the second transmission window 330. Further, the second device 106 may receive data traffic from the first device 104 during the second paging window 336.

  [0284] As another example, referring to FIG. 3, the subscriber logic 134 of the second device 106 has a second paging window 336 associated with the second transmission window 330 of the first auxiliary channel 308. ACK may be sent to the first device 104. In this case, the first logical channel referenced by the logical channel index may be the second auxiliary channel 310. Accordingly, the second device 106 may monitor the second auxiliary channel 310 during the second paging window 348 associated with the second transmission window 342. Further, the second device 106 may receive data traffic from the first device 104 during the second paging window 348.

  [0285] In certain implementations, the method 2000 further includes initiating a first countdown during a particular paging window based on the first contention parameter before receiving the paging message; Initiating a second countdown during a particular paging window based on the two contention parameters. In at least one implementation, the second contention parameter corresponds to a longer time period than the first contention parameter. Illustratively, referring to FIG. 9, a first countdown may be initiated based on the parameter CW_paging, and a second countdown may be initiated based on the parameter FixedCW_data_min. FixedCW_data_min corresponds to a longer time period than CW_paging. The method 1900 further transmits a second paging message from the second device to other devices in the data link group in response to the first countdown expiration and data in response to the second countdown expiration. Transmitting second data traffic to a third device of the link group. The second paging message may be sent during a specific paging window and the second data traffic may be sent before the start of the second data window.

  [0286] Additionally or alternatively, the paging message may include a first traffic category field and the data frame of the data traffic may include a second traffic category field. In one case, the value of the first traffic category field corresponds to a higher priority than the value of the second traffic category field. For example, referring to FIG. 9, the paging message may include a first traffic category field having a higher priority than a second traffic category field included in the data frame. In addition, the first traffic category field and the second traffic category field may include a quality of service (QoS) category field.

  [0287] In another specific implementation, the method 2000 monitors at a second device a specific communication channel during a second time period and at a second device to a second service. Receiving a second paging message from a corresponding third device. The second paging message is received during the paging window portion of the transmission window corresponding to the second time period. The method 2000 further transmits a trigger frame from the second device to the third device during the trigger window portion of the transmission window, and at the second device, the third time during the trigger window portion of the transmission window. Receiving data traffic from the device. Method 2000 may also include receiving data traffic from the third device during the data traffic portion of the transmission window at the second device. Receiving data during the trigger window is further described with reference to FIG. In some implementations, as described with reference to FIG. 3, the second time period corresponds to a particular logical channel included that is referenced by the index of the logical channel.

  [0288] Accordingly, FIG. 20 illustrates a first logic where an indication of availability received from a provider device such as the first device 104 of FIG. 1 during a particular paging window is referenced by the index of the logical channel. Fig. 5 illustrates that data transfer between the paging portions of subsequent transmission windows associated with a channel may be enabled. Transmission of data during the paging portion of the transmission window can improve data throughput because data transmission can be allowed in the paging portion as well as the data portion of the transmission window.

  [0289] Referring to FIG. 21, a particular aspect of the method of operation is shown, generally designated 2100. In certain implementations, the method 2100 may be performed by at least one provider logic 130 of the devices 104, 106, 108, and 110 of the system 100 of FIG. In some cases, if the availability information 116 received from a particular device during the association phase of communication of the NAN 102 indicates that the particular device is not “always” available for communication during the data window, Method 2100 may be performed.

  [0290] At 2102, the method 2100 includes generating a paging message at a provider device during a paging window portion of a transmission window. For example, referring to FIG. 1, the provider logic 130 of the first device 104 may generate a paging message 128 during the paging window portion of the transmission window. Illustratively, the provider logic 130 of the first device 104, as described with respect to FIG. 10, illustrates the paging portion 1004 of the transmission window 1002 that represents the previous time period of the PWB 1010 that separates the paging portion 1004 from the trigger portion 1006. In between, a paging message 128 may be generated.

  [0291] The method 2100 also includes, at 2104, sending a paging message from the provider device to one or more subscriber devices in a data link group of a neighbor aware network (NAN). For example, referring to FIG. 1, the first device 104 may send a paging message 128 to at least the second device 106 of the NAN 102. Further, in some cases, multiple devices may subscribe to specific services provided by the first device 104. Illustratively, the third device 108 may represent another device that subscribes to a particular service. In this case, the first device 104 may also send a paging message 128 to the third device 108 of the NAN 102.

  [0292] At 2106, the method 2100 includes an acknowledgment, such as a trigger message, from each of the one or more subscriber devices during the trigger window portion of the transmission window that follows the paging window portion of the transmission window at the provider device. Determining whether or not is received. For example, the provider logic 130 (see FIG. 1) of the first device 104 determines whether an ACK has been received from each of the subscriber devices during the trigger portion 1006 (see FIG. 10) of the transmission window 1002. Can do. Illustratively, in the simplified example where the second device 106 of FIG. 1 represents a single subscriber device on the NAN 102, the first device 104 may receive a trigger message during the trigger portion 1006 of the transmission window 1002. May have been received from the first device. As another example, if the second device 106 and the third device 108 of FIG. 1 represent multiple subscriber devices, the first device 104 is from each of the second device 106 and the third device 108. It may be determined whether a trigger message has been received.

  [0293] If an ACK, such as a trigger message, is received from one or more subscriber devices during the trigger window portion of the transmission window, the method 2100, at 2108, during at least a portion of the trigger window portion of the transmission window. Including sending data traffic. For example, the provider logic of the first device 104 may transmit the data 122 to the second device 106 and / or the third device 108 during at least a portion of the trigger portion 1006 of the transmission window 1002. As described further with respect to FIG. 10, contention window parameters may be used to allow data transmission to occur prior to TrWB 1012.

  [0294] Further, the method 2100 includes, at 2110, transmitting data traffic during a data portion of the transmission window that follows the trigger window portion of the transmission window. For example, the provider logic of first device 104 may transmit data 122 to second device 106 and / or third device 108 during data portion 1008 of transmission window 1002.

  [0295] If an ACK, such as a trigger message, is received from one or more subscriber devices during the trigger window portion of the transmission window, the method 2100 may proceed directly to transmitting data traffic at 2110. That is, data traffic may be transmitted during the data portion of the transmission window that follows the trigger window portion of the transmission window. As further described with respect to FIG. 10, TrWB 1012 may represent a threshold amount of time that an ACK should be received, and if no ACK is received from each of the one or more subscriber devices, the data transfer is transmitted. It may not occur during the trigger portion 1006 of the window 1002.

  [0296] Accordingly, FIG. 21 illustrates that a transmission window, such as transmission window 1002 of FIG. 10, may include not only a paging portion but also a trigger portion. The trigger portion can be used to receive an ACK from the subscriber device. Data transfer may occur during the trigger portion of the transmission window if an ACK is received from each of the one or more subscriber devices during the trigger portion of the transmission window. Transmission of data during the trigger portion of the transmission window can improve data throughput because data transmission can be allowed in the trigger portion as well as the data portion of the transmission window.

  [0297] Referring to FIG. 22, a particular aspect of the method of operation is shown and designated generally as 2200. In certain implementations, the method 2200 may be performed by the subscriber logic 134 of at least one of the devices 104, 106, 108, and 110 of the system 100 of FIG. In some cases, if the availability information 116 received from a particular device during the association phase of the communication of the NAN 102 indicates that the particular device is not “always” available for communication during the data window, Method 2200 may be performed.

  [0298] The method 2200 includes monitoring, at 2202, a particular logical channel among a plurality of logical channels associated with the data link group at a subscriber device of a data link group of a neighbor aware network (NAN). . For example, the subscriber logic 134 of the second device 106 may monitor a particular logical channel of the plurality of logical channels 150 associated with the data link group of the NAN 102.

  [0299] At 2204, the method 2200 also includes receiving a paging message at a subscriber device from a provider device associated with a particular service. A subscriber device may receive a paging message during the paging window portion of the transmission window associated with a particular logical channel. For example, the subscriber device 134 of the second device 106 may receive the paging message 128 during the paging window portion of the transmission window associated with a particular logical channel. As further described with respect to FIGS. 3-8, the paging message 128 is transmitted between the first paging window 332 or second associated with the first auxiliary channel 308 during the paging window 324 associated with the basic communication channel 306. May be received during the first paging window 336 or during the first paging window 344 or the second paging window 348 associated with the second auxiliary channel 310.

  [0300] The method 2200 further includes, at 2206, transmitting an acknowledgment, such as a trigger message, from the subscriber device to the provider device during a trigger window portion of the transmission window that follows the paging window portion. For example, the subscriber logic 134 of the second device 106 may send an ACK to the first device 104 (see FIG. 1) during the trigger window portion that follows the paging window portion. For example, the ACK may be transmitted to the first device 104 during the trigger portion 1006 of the transmission window 1002 that follows the paging portion 1004 of the transmission window 1002 of FIG.

  [0301] At 2208, the method 2200 may also include receiving data traffic from a provider device at a subscriber device during a trigger window portion of a transmission window. For example, the subscriber logic 134 of the second device 106 may receive data traffic during the trigger window portion of the transmission window. Illustratively, the second device 106 may receive data 122 during the trigger portion 1006 of the transmission window 1002 of FIG. As further described with respect to FIG. 10, TrWB 1012 may represent a threshold amount of time that an ACK should be received by a provider device, such as first device 104, where the ACK is one or more subscriber devices. Data transfer may occur during the trigger portion 1006 of the send window 1002.

  [0302] At 2210, the method 2200 may also include receiving data traffic from a provider device at a subscriber device during a data traffic portion of a transmission window that follows a trigger window portion. For example, the subscriber logic 134 of the second device 106 may receive data traffic, such as data 122, during the data portion 1008 of the transmission window 1002 of FIG.

  [0303] Referring to FIG. 23, a particular aspect of the method of operation is shown, generally designated 2300. In certain implementations, the method 2300 may be performed by the provider logic 130 of at least one of the devices 104, 106, 108, and 110 of the system 100 of FIG. In some cases, the method 2300 may be performed when the first device 104 has data scheduled for transmission to at least one other device of the data link group of the NAN 102.

  [0304] The method 2300 includes, at 2302, generating a paging message at a first device of a group of neighbor aware networks (NANs) (eg, a data link group). For example, the first device 104 may generate a paging message 128 (via the provider logic 130). The paging message includes a paged device list. The paged device list specifies a subset of devices in the group. The subset of devices is scheduled to receive data from the first device during the transmission window. The paging message includes a receiver address field having a specific receiver address value. Illustratively, the paging message 128 may include a PDL 174 that identifies a subset of devices in the data link group. The subset of devices may be scheduled to receive data 122 from the first device 104. In addition, the paging message 128 may include a receiver address field having a specific receiver address value 170. In one particular implementation, the particular receiver address value is stored in the memory of the first device. For example, a particular receiver address value 170 may be stored in the memory of devices 104, 106, 108, and 110. In another specific implementation, the specific receiver address value includes a NAN cluster ID for the NAN. For example, the particular receiver address value 170 may be the NAN cluster ID represented by the A3 field of the SDF 1100 of FIG. In another specific implementation, the specific receiver address value includes a group identifier for the group, such as a data link group identifier for the data link group. For example, the particular receiver address value 170 may be the data link group ID field 1126. In another specific implementation, specific receiver address values are defined by the Institute of Electrical and Electronics Engineers (IEEE) standard, Wi-Fi Alliance standard, or both.

  [0305] The method 2300 also includes transmitting a paging message to at least one device in a group other than the first device during the paging window. For example, the first device 104 may send a paging message 128 to the second device 106 and the third device 108 during a data link group paging window. A paging message 128 may be sent when the first device 104 has data scheduled to be sent to one or more of the devices in the data link group.

  [0306] In certain implementations, the method 2300 includes receiving an acknowledgment from a second device of the group in response to transmitting the paging message. For example, the first device 104 may receive an ACK 180 from the second device 106 (or from the third device 108) in response to sending the paging message 128. Acknowledgments may be received after a short inter-frame space (SIFS) period. In addition, the second device may be separate from the subset of devices. For example, the first device 104 may receive an ACK 180 from the third device 108 even though the third device 108 is not included in the subset of devices indicated by the paging message 128.

  [0307] In certain implementations, the method 2300 includes receiving a plurality of acknowledgments from a plurality of devices in the group in response to transmitting the paging message. In addition, as described with reference to FIG. 1, multiple acknowledgments may have the same waveform, and multiple devices generate multiple acknowledgments based on the same scrambling seed. It may be received as a path transmission. Alternatively, method 2300 may further include detecting receipt of multiple acknowledgments in response to detecting received waveform energy that exceeds a threshold. The received waveform energy is detected within a short interframe space (SIFS) period, and multiple acknowledgments are generated based on different scrambling seeds. Illustratively, as described with reference to FIG. 1, the first device 104 monitors the wireless network during a SIFS period to detect the level of transmitted energy corresponding to multiple ACK waveforms. Can do. Upon detecting a level of transmitted energy that exceeds a threshold, the first device 104 may interpret the level of transmitted energy as indicating reception of multiple ACK waveforms. Even if it is impossible to decode multiple ACKs due to interference from multiple ACKs by detecting reception of multiple ACKs based on the level of transmitted energy, the first device 104 May be able to detect multiple ACKs.

  [0308] In certain implementations, the paging message includes a management frame. In another specific implementation, the paging message includes an action frame. For example, the paging message 128 may include or correspond to a management frame or action frame. In another specific implementation, the paging message includes a service discovery frame (SDF). For example, the paging message 128 may include or correspond to the SDF 1100 of FIG.

  [0309] The paging message may include a first attribute that includes a paged device list. For example, as described with reference to FIG. 1, the paging message 128 may include an attribute 172 that includes a PDL 174 that identifies a subset of devices that are scheduled to receive data 122 from the first device 104. . As another example, the SDF 1100 may include a first NAN attribute 1112 that includes a PDL 1150 that identifies a subset of devices that are scheduled to receive data. In certain implementations, PDL 174 (or PDL 1150) may include a traffic indication map (TIM). In another particular implementation, PDL 174 (or PDL 1150) may include a Bloom filter. In another specific implementation, PDL 174 (or PDL 1150) may include a list of media access control (MAC) addresses.

  [0310] In addition, the method 2300 may include determining a type of traffic corresponding to the first data based on a traffic type indicator included in the paged device list control field of the attribute. For example, the second set of bits 1162 of the PDL control field 1152 may include a traffic type indicator that identifies the type of data corresponding to the list 1154 of devices. One or more devices may determine the traffic type of the data based on the second set of bits 1162 of the PDL control field 1152. The traffic type indicator may identify a quality of service (QoS) category corresponding to the first portion of the data. In addition, the first NAN attribute 1112 may further include a plurality of paged device lists including a paged device list. For example, the PDL sequence 1130 may include multiple PDLs.

  [0311] In another specific implementation, the first attribute includes a page attribute, and the page attribute includes a specific field that indicates a type of data structure indicating a paged device list. The page attribute may include a traffic indicator that identifies the type of traffic corresponding to the first portion of data. Illustratively, the first NAN attribute 1112 can include a page attribute 1200 that includes a traffic type indicator 1212. In addition, the paging message may include a second attribute that includes a second paged device list. The second attribute may include a second traffic type indicator that identifies the type of traffic corresponding to the second portion of data. The type of traffic corresponding to the first portion of data may be different from the type of traffic corresponding to the second portion of data. For example, the paging message 128 may include a second NAN attribute 1114, and the traffic type indicator 1212 of the second NAN attribute 1114 is the type of data indicated by the traffic type indicator 1212 of the first NAN attribute 1112. May indicate different types of data. As an example, the traffic type indicator 1212 of the first NAN attribute 1112 may indicate voice traffic and the traffic type indicator 1212 of the second NAN attribute 1114 may indicate packet data traffic.

  [0312] Additionally or alternatively, the attributes may include page attributes. For example, attribute 172, first NAN attribute 1112, second NAN attribute 1114, or a combination thereof may include page attribute 1120. The page attribute may include a page control field indicating the number of paged device lists included in the page attribute. For example, the page attribute 1120 may include a page control field 1128 that indicates the number of PDLs included in the page attribute 1120. In addition or alternatively, the paged device list control field may specify a medium access control (MAC) address of a particular device in the data link group if the set of bits in the page control field has a particular value. . For example, if the third set 1164 of bits in the PDL control field 1152 has a specific value, the list of devices 1154 may include the MAC address of the device that generated the new common group key (CGK) corresponding to the data link group. Including. In another specific implementation, the first attribute may include a traffic announcement attribute, which may include a type length value (TLV) field that includes a paged device list. For example, the paging message 128 may include a traffic announcement attribute 1230 that includes a TLV field included in the PDL 1238.

  [0313] In certain implementations, the method 2300 includes sending a request to send (RTS) frame to the second device before sending the paging message. The second device is included in the subset of devices. Illustratively, the first device 104 may send a first RTS message 184 to the second device 106 before sending the paging message 128. In addition, the method 2300 may include transmitting a paging message to the second device in response to receiving a clear to send (CTS) frame from the second device, where the CTS frame is a short frame. Received within the inter-space (SIFS) period. For example, the first device 104 may send a paging message 128 to the second device 106 in response to receiving the first CTS message 186 from the second device 106 within the SIFS period. In certain implementations, based on the second device sending a CTS frame, the paging message is a multicast message, and the paging message includes a second receiver address having a multicast address. For example, based on the second device 106 sending the first CTS message 186, the paging message 128 may be a multicast message and may include a second receiver address having a multicast address. .

  [0314] Alternatively, the method 2300 may further determine that a second RTS frame is transmitted to the third device (device) in response to determining that a clear to send (CTS) frame has not been received from the second device. To be included in a subset of). The paging message may be transmitted to the second device and the third device in response to receiving the second CTS frame from the third device within the second SIFS period. For example, the first device 104 may send a second RTS message 188 to the third device 108 in response to determining that a CTS message has not been received from the second device 106. The first device 104 may send a paging message 128 to the second device 106 and the third device 108 in response to receiving the second CTS message 190 from the third device 108.

  [0315] In certain implementations, the method 2300 includes receiving a trigger frame from a second device of the group in response to transmitting the paging message. For example, the first device 104 may receive the trigger frame 182 from the second device 106 in response to transmitting the paging message 128. The second device 106 may send a trigger frame based on determining that the second device 106 is included in the subset of devices indicated by the paging message 128. The trigger frame may indicate that the second device 106 is scheduled to be in an active mode of operation during the transmission window. In addition, the trigger frame may be received at the beginning of the data window. For example, the trigger frame may be received during a trigger window that is at the beginning of the data window. In certain implementations, the trigger frame may include a quality of service null (QoS_NULL) frame. In another implementation, the trigger frame may include a power saving poll (PS_POLL) frame. For example, as described with reference to FIG. 1, the trigger frame 182 may include or correspond to a QoS_NULL frame or a PS_POLL frame. Additionally, method 2300 can further include transmitting a portion of the data to the second device in response to receiving the trigger frame. For example, in response to receiving the trigger frame 182 from the second device 106, the first device 104 receives the data 122 (or a portion of the data 122 scheduled for the second device 106) To the second device 106.

  [0316] In certain implementations, the method 2300 includes one or more availability from each of the one or more devices during the trigger window portion of the transmission window that follows the paging window portion of the transmission window. Including detecting receipt of the indication. The paging message is transmitted during the paging window portion of the transmission window, and at least a portion of the data traffic is transmitted during the trigger window portion of the transmission window in response to detecting one or more availability indications. For example, the first device 104 may detect receipt of one or more availability indications, such as a trigger message, from one or more devices including the second device 106.

  [0317] Accordingly, FIG. 23 illustrates generating a paging message that includes a receiver address field having a particular receiver address value. A particular receiver address value may allow one or more devices to identify the received message as a paging message.

  [0318] Referring to FIG. 24, a particular aspect of the method of operation is shown, generally designated 2400. In certain implementations, the method 2400 may be performed by the subscriber logic 134 of at least one of the devices 104, 106, 108, and 110 of the system 100 of FIG. In some cases, method 2400 may be performed during a paging window corresponding to the data link group of NAN 102.

  [0319] At 2402, method 2400 includes monitoring a wireless network during a paging window at a first device of a data link group of a neighbor aware network (NAN). For example, the second device 106 of the data link group of the NAN 102 may monitor the data link group channel during the paging window.

  [0320] At 2404, the method 2400 also includes receiving a paging message at the first device from the second device of the data link group during the paging window. For example, the second device 106 receives a paging message 128 from the first device 104 during the paging window. The paging message includes a paged device list. The paged device list identifies a subset of devices in the data link group. The subset of devices is scheduled to receive data from the second device during the transmission window. The paging message includes a receiver address field having a specific receiver address value. Illustratively, the paging message 128 may identify a subset of devices in the data link group as recipients of data 122 from the first device 104 during the transmission window. The paging message 128 may include a receiver address field with a specific receiver address value 170. In certain implementations, the particular receiver address value includes a stored value, a NAN cluster ID for NAN, or a data link group identifier for a data link group. For example, a particular receiver address value 170 may be a value stored in the memory of devices 104, 106, 108, and 110, a NAN cluster ID indicated by the A3 field of SDF 1100, or a data link group of page attributes 1120 It may be an ID field 1126.

  [0321] In certain implementations, the method 2400 is responsive to processing a portion of the paging message to identify a particular receiver address value and identifying the particular receiver address value. Sending an acknowledgment from the first device to the second device. For example, if the second device 106 processes a portion of the paging message 128 that includes a receiver address field and the value of the receiver address field matches a particular receiver address value 170, the second device 106 An ACK 180 is transmitted to the first device 104. The third device 108 may also process that portion of the paging message 128 and send an ACK 180 to the first device 104. The paging message may include a service discovery frame (SDF), a management frame, or an action frame. For example, the paging message 128 may include or correspond to an SDF 1100, a management frame, or an action frame.

  [0322] Additionally or alternatively, the paging message may include an attribute, and the attribute may include a paged device list. For example, the paging message 128 may include an attribute 172 that includes a PDL 174. PDL 174 may identify a subset of devices that are scheduled to receive data 122 from first device 104. As another example, the SDF 1100 may include a first NAN attribute 1112 (and a second NAN attribute 1114) that includes a PDL 1150. Method 2400 may further include processing the paged device list to determine whether the first device is included in the subset of devices. Method 2400 may also include transmitting a trigger frame from the first device to the second device when determining that the first device is included in the subset of devices. In addition, the method 2400 may include transmitting a trigger frame at the beginning of the data window. For example, the trigger frame may be transmitted during the trigger window at the beginning of the data window.

  [0323] For example, the second device 106 may continue to process the paging message 128 to identify the PDL 174 and determine whether the second device 106 is included in the subset of devices indicated by the PDL 174. . If the second device 106 is included in the subset of devices, the second device 106 transmits a trigger frame 182 to the first device 104. In certain implementations, the trigger frame includes a quality of service null (QoS_NULL) frame, a power saving poll (PS_POLL) frame, an ad hoc traffic indication message (ATIM) frame, or another frame. For example, as described with reference to FIG. 1, the trigger frame 182 may include or correspond to a QoS_NULL frame or a PS_POLL frame.

  [0324] Additionally or alternatively, the method 2400 may include determining a type of traffic corresponding to the data based on a traffic type indicator included in the paged device list control field of the attribute. For example, the second device 106 may determine the type of traffic corresponding to the data 122 based on a traffic type indicator included in the second set 1162 of bits in the PDL control field 1152 of the page attribute 1120 of FIG. . In at least one implementation, the trigger frame corresponds to high priority traffic. For example, the trigger frame 182 traffic type may correspond to high priority traffic, such as voice traffic. Additionally or alternatively, the method 2400 further determines whether a new common group key (CGK) corresponding to the data link group has been generated based on the first set of bits 1220 of the page control field 1208. Determining.

  [0325] In certain implementations, the method 2400 further includes the first device being included in the subset of devices and a second paging message received by the first device from the third device. Determining that it is included in the second subset of devices shown includes transmitting a multicast trigger frame from the first device to the second device and the third device. For example, the second device 106 may receive a paging message 128 from the first device 104, and the second device 106 may receive a second paging message from a different device. If the second device 106 determines that it is scheduled to receive traffic from both devices, the second device 106 may multicast a trigger frame 182 to both devices.

  [0326] In certain implementations, the second logical channel corresponds to an auxiliary communication channel. The first logical channel represents the next auxiliary communication channel, and the next auxiliary communication channel indication follows the auxiliary communication channel indication in the logical channel index.

  [0327] Thus, FIG. 24 shows that one or more devices can receive a message from the first device of the data link group, based on whether the receiver address has a particular receiver address value. Indicates that it can be determined whether the message is a paging message.

  [0328] Referring to FIG. 25, a particular illustrative aspect of a wireless communication device is shown and generally designated 2500. Device 2500 includes a processor 2510, such as a digital signal processor, coupled to memory 2532. In one illustrative implementation, device 2500, or component thereof, may correspond to device 104, 106, 108, and 110 of FIG. 1, or at least one of these components. The processor 2510 may include provider logic 130, subscriber logic 134, or both.

  [0329] The processor 2510 may be configured to execute software (eg, a program of one or more instructions 2568) stored in the memory 2532. Additionally or alternatively, the processor 2510 can be configured to implement one or more instructions stored in the memory of the wireless interface 2540. The wireless interface 2540 may be an Institute of Electrical and Electronics Engineers (IEEE) 802.11 compliant interface. For example, the wireless interface 2540 may be configured to operate according to one or more wireless communication standards, including one or more IEEE 802.11 standards and one or more NAN standards. In certain implementations, the processor 2510 may be configured to perform one or more operations or methods described with reference to FIGS. For example, the processor 2510 may be configured to perform operations associated with the association exchange 112 of FIG. 1 (eg, during the communication association phase of the NAN 102). Illustratively, the processor 2510 may be configured to generate the capability information 114 and availability information 116 of FIG. 1 and send (or receive) the capability information 114 and availability information 116. The processor 2510 may further be configured to generate the service advertisement 120 of FIG. 1 and send (or receive) the service advertisement 120 via the NAN communication channel 304 of FIG. The processor 2510 may be configured to receive (or send) the subscription message 124 of FIG. The processor 2510 may be configured to monitor one or more communication channels during one or more associated paging windows. The processor 2510 may be configured to transmit (or receive) data via one or more communication channels during one or more associated data transmission windows. The processor 2510 may be configured to refrain from monitoring one or more communication channels during one or more associated paging windows and / or data transmission windows.

  [0330] The wireless interface 2540 may be coupled to the processor 2510 and the antenna 2542. For example, the wireless interface 2540 can be coupled to the antenna 2542 via the transceiver 136 so that wireless data received via the antenna 2542 AND can be provided to the processor 2510.

  [0331] A coder / decoder (codec) 2534 may also be coupled to the processor 2510. Speaker 2536 and microphone 2538 may be coupled to codec 2534. A display controller 2526 may be coupled to the processor 2510 and the display device 2528. In certain implementations, processor 2510, display controller 2526, memory 2532, codec 2534, and wireless interface 2540 are included in a system-in-package or system-on-chip device 2522. In one particular implementation, input device 2530 and power supply 2544 are coupled to system-on-chip device 2522. Moreover, in certain implementations, the display device 2528, input device 2530, speaker 2536, microphone 2538, antenna 2542, and power supply 2544 are external to the system-on-chip device 2522, as shown in FIG. However, each of display device 2528, input device 2530, speaker 2536, microphone 2538, antenna 2542, and power supply 2544 are coupled to one or more components of system-on-chip device 2522 such as one or more interfaces or controllers. Can be done. In certain implementations, the device 2500 includes at least one of a communication device, music player, video player, entertainment unit, navigation device, personal digital assistant (PDA), mobile device, computer, decoder, or set-top box. obtain.

  [0332] In connection with the described aspects, an apparatus includes means for receiving availability information from a device during a connection setup phase of NAN communication (or during a NAN discovery window), the connection setup phase Includes the exchange of device capability information. For example, the means for receiving may include the transceiver 136, one or more other devices, circuits, modules, or instructions configured to transmit a join message, or any combination thereof. As a non-limiting example, the connection setup phase can be an association phase or a negotiation phase.

  [0333] The apparatus may further perform a message exchange during a transmission window without performing a message exchange to determine device availability during the transmission window (based on availability information indicating device availability during the transmission window). Means for transmitting data to the device. The device also performs a message exchange (eg, sends a polling message) to determine device availability before sending data to the device (if availability information does not indicate device availability during the data window) Or receiving a trigger message). For example, means for transmitting (and means for receiving) may include transceiver 136, one or more other devices, circuits, modules, or instructions configured to transmit a subscription message, or those Any combination may be included.

  [0334] Further, in connection with the described aspects, the second apparatus (device) includes means for transmitting availability information to the second device during a connection setup phase of communication of the NAN. The connection setup phase includes the exchange of device capability information, and the availability information indicates the availability during the transmission window. For example, the means for transmitting and the means for receiving include the transceiver 136, one or more other devices, circuits, modules, or instructions configured to transmit a subscription message, or any of them Combinations can be included.

  [0335] The second apparatus further includes a transmission window without performing a message exchange to provide an indication of availability to the second device (based on availability information indicating the availability of the device during the transmission window). Means for receiving data from the second device during The second apparatus also provides means for performing a message exchange (eg, means for sending a message in response to a polling message or a trigger message if the availability information does not indicate the availability of the device during the transmission window. Means for transmitting). For example, means for receiving (and means for transmitting) may include transceiver 136, one or more other devices, circuits, modules, or instructions configured to transmit a subscription message, or those Any combination may be included. As a non-limiting example, the connection setup phase can be an association phase or a negotiation phase.

  [0336] In connection with the described aspects, a third apparatus includes means for generating a paging message at a first device of a data link group of a neighbor aware network (NAN). For example, the means for generating include the first device 104 of FIG. 1, the provider logic 130, the instructions 2568 of FIG. 25, the wireless interface 2540, the processor 2510 programmed to execute the provider logic 130, a paging message. Can include one or more other devices, circuits, modules, or instructions, or any combination thereof. The paging message includes a paged device list. The paged device list identifies a subset of devices in the data link group. The subset of devices is scheduled to receive data from the first device during the transmission window. The paging message includes a receiver address field having a specific receiver address value.

  [0337] The third apparatus also includes means for sending a paging message to a device other than the first device during the paging window. For example, the means for transmitting may be the first device 104 of FIG. 1, the transceiver 136, the transceiver 136 of FIG. 25, one or more other devices, circuits, modules, or for transmitting a paging message. It may include instructions, or any combination thereof.

  [0338] In connection with the described aspects, a fourth apparatus includes means for monitoring a wireless network during a paging window at a first device of a data link group of a neighbor aware network (NAN). . For example, the means for monitoring is programmed to execute the second device 106, third device 108, subscriber logic 134 of FIG. 1, instruction 2568, wireless interface 2540, subscriber logic 134 of FIG. Processor 2510, one or more other devices, circuits, modules, or instructions for monitoring the wireless network during the paging window, or any combination thereof.

  [0339] The fourth apparatus also includes means for receiving, at the first device, a paging message from the second device of the data link group during the paging window. For example, the means for receiving include the second device 106 of FIG. 1, the third device 108, the transceiver 136, the transceiver 136 of FIG. 25, one or more other devices for receiving paging messages. , Circuitry, modules, or instructions, or any combination thereof. The paging message includes a paged device list. The paged device list identifies a subset of devices in the data link group. The subset of devices is scheduled to receive data from the second device during the transmission window. The paging message includes a receiver address field having a specific receiver address value.

  [0340] In connection with the described aspects, the fifth apparatus can, at the first device, correspond to a data link group of a neighbor aware network (NAN) or during a specific time period corresponding to the NAN. Means for generating a message including an indication of whether the first device is available. For example, the means for generating include the first device 104 of FIG. 1, the provider logic 130, the instructions 2568 of FIG. 25, the wireless interface 2540, the processor 2510 programmed to execute the provider logic 130, a message. It may include one or more other devices, circuits, modules, or instructions for generating, or any combination thereof.

  [0341] The fifth apparatus also includes means for transmitting a message from the first device to one or more devices of the data link group. For example, the means for transmitting include the first device 104 of FIG. 1, the transceiver 136, the transceiver 136 of FIG. 25, one or more other devices, circuits, modules, or instructions for transmitting a message. Or any combination thereof.

  [0342] In connection with the described aspects, a sixth apparatus can perform a specific time period corresponding to a data link group or corresponding to a NAN at a second device of a data link group of a neighbor aware network (NAN). Means for receiving a message including an indication of whether a first device corresponding to a particular service is available during For example, the means for receiving includes the second device 106 of FIG. 1, the subscriber logic 134, the instructions 2568 of FIG. 25, the wireless interface 2540, the processor 2510 programmed to execute the subscriber logic 134, the message. It may include one or more other devices, circuits, modules, or instructions for receiving, or any combination thereof.

  [0343] The sixth apparatus may also be responsive to determining that the first device is unavailable during the particular time period, the one or more corresponding to the particular time period. Means are included for transitioning to a low power mode of operation during the transmission window. For example, the means for transitioning transitions to the second device 106 of FIG. 1, subscriber logic 134, instruction 2568 of FIG. 25, processor 2510 programmed to execute subscriber logic 134, low power mode of operation. One or more other devices, circuits, modules, or instructions for doing so, or any combination thereof may be included.

  [0344] One or more of the disclosed aspects may be a communication device, a personal digital assistant (PDA), a mobile phone, a cellular phone, a computerized watch, a navigation device, a computer, a portable computer, a desktop computer, or their It may be implemented in a system or apparatus such as device 2500 that may include any combination. As another example, device 2500 may be a set-top box, entertainment unit, fixed position data unit, mobile position data unit, monitor, computer monitor, television, tuner, built in vehicle, or communicatively coupled to a vehicle. System or component, or any combination thereof. As another example, device 2500 can receive radio, satellite radio, music player, digital music player, portable music player, video player, digital video player, digital video disc (DVD) player, portable digital video player, data or computer instructions. Any other device that stores or retrieves, or any combination thereof may be included.

  [0345] Although one or more of FIGS. 1-25 may illustrate systems, devices, and / or methods according to the teachings of the present disclosure, the present disclosure may be directed to these illustrated systems, devices, and / or methods. It is not limited to. One or more functions or components of any of FIGS. 1-25 shown or described herein may be combined with another one or more other parts of FIGS. . Accordingly, any single implementation described in this specification should not be construed as limiting, but the implementation of the present disclosure described with reference to one drawing can be derived from the teachings of this disclosure. It can be combined appropriately with implementations described with reference to other figures without departing.

  [0346] Various exemplary logic blocks, configurations, modules, circuits, and algorithm steps described in connection with the implementations disclosed herein may be electronic hardware, computer software executed by a processor, or One skilled in the art will further understand that it can be implemented as a combination of both. Various exemplary components, blocks, configurations, modules, circuits, and steps are generally described above with respect to their functionality. Whether such functionality is implemented as hardware or processor-executable instructions depends on the specific application and design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in a variety of ways for each specific application, but such implementation decisions should not be construed as causing a departure from the scope of this disclosure. .

  [0347] The method or algorithm steps described in connection with the disclosure herein may be implemented directly in hardware, implemented in software modules executed by a processor, or a combination of the two. . Software modules include random access memory (RAM), flash memory, read only memory (ROM), programmable read only memory (PROM), erasable programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM) Trademark)), registers, hard disks, removable disks, compact disk read-only memory (CD-ROM), or any other form of non-transient known in the art (eg, non-transitory) Can be present in a non-transitory storage medium. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (ASIC). An ASIC may reside in a computing device or user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a computing device or user terminal.

  [0348] The previous description is provided to enable any person skilled in the art to make or use the disclosed implementations. Various modifications to these implementations will be readily apparent to those skilled in the art, and the principles defined herein may be applied to other implementations without departing from the scope of the disclosure. Accordingly, the present disclosure is not intended to be limited to the implementations shown herein but is to be accorded the widest possible scope consistent with the principles and novel features defined by the following claims. It is.

Claims (30)

A communication method,
Whether the first device is available during a particular time period in which the devices of a data link group of a neighbor aware network (NAN) are configured to operate in an active mode of operation. Generating a message containing instructions;
Transmitting the message from the first device to one or more devices of the data link group.   The message comprises a service advertisement, the message is transmitted during the discovery window of the NAN, and the particular time period includes one or more time periods during the discovery window of the NAN. The method described in 1.   The method of claim 1, wherein the message comprises a paging message, and the message is transmitted during a paging window of the data link group.   4. The method of claim 3, wherein at least a portion of the specific time period is identified by a plurality of logical channels, each of the plurality of logical channels corresponding to a communication channel and at least one time period.   The message from the first device during the paging window portion of the transmission window corresponding to the first logical channel referenced by the index of the logical channel corresponding to the data link group of the NAN The method of claim 1, wherein the method is transmitted to a plurality of devices.   6. The method of claim 5, wherein the first logical channel corresponds to an auxiliary communication channel of a plurality of auxiliary communication channels referenced by a basic communication channel or the index of a logical channel.   The specific time period is specified by a plurality of logical channels, the plurality of logical channels represents a communication channel and a plurality of time periods, and the communication channel indication is an indication of the auxiliary communication channel in the index of the logical channel The method according to claim 6, which follows.   If the message includes a specific set of bits having a first value, the indication specifies unavailability, and if the specific set of bits has a second value different from the first value, the The method of claim 1, wherein the indication identifies availability. A processor;
A memory coupled to the processor, the memory comprising:
Whether the first device is available during a particular time period in which the devices of a data link group of a neighbor aware network (NAN) are configured to operate in an active mode of operation. Generating a message containing instructions;
Initiating transmission of the message from the first device to one or more devices of the data link group. The apparatus stores instructions that are executable by the processor to perform an operation.   The message comprises a paging message, the message is transmitted during a paging window corresponding to the data link group, and the device of the data link group is configured to operate in the active mode of operation during the paging window. 10. The apparatus of claim 9, wherein:   The message comprises a service advertisement, the message is transmitted during a discovery window corresponding to the NAN, and the device of the NAN is configured to operate in the active mode of operation during the discovery window; The apparatus of claim 9, wherein the device comprises the device of the data link group, and wherein the particular time period comprises one or more time periods between the discovery windows of the NAN.   If the message includes a specific set of bits having a first value, the indication specifies unavailability, and if the specific set of bits has a second value different from the first value, the The apparatus of claim 9, wherein the indication specifies availability.   The apparatus of claim 12, wherein the specific set of bits includes a field or a specific bit. A communication method,
In a second device of a data link group of a neighbor aware network (NAN), a first corresponding to a particular service during a particular time period configured for the device of the data link group to operate in an active mode of operation. Receiving a message containing an indication of whether the device is available;
In response to determining that the first device is unavailable during the particular time period, a low power mode of operation during one or more transmission windows corresponding to the particular time period Transitioning to.   If the second device is peered with another device, further determining that the other device is unavailable during the specified time period before transitioning to the low power mode of operation; 15. The method of claim 14, comprising.   The method of claim 14, wherein the message comprises a service advertisement and the specific time period includes a discovery window for the NAN.   The method of claim 14, wherein the message comprises a paging message and the specific time period comprises a paging window for the data link group.   The method of claim 17, wherein at least a portion of the specific time period is identified by a plurality of logical channels, each of the plurality of logical channels corresponding to a communication channel and at least one time period.   The method of claim 18, wherein the paging message is received during a paging window portion of a transmission window corresponding to a first logical channel referenced by an index of a logical channel corresponding to the data link group.   The method of claim 19, wherein the first logical channel corresponds to a basic communication channel.   The method of claim 19, wherein the first logical channel corresponds to an auxiliary communication channel of a plurality of auxiliary communication channels referenced by the index of the logical channel.   If a particular bit has a first bit value, the indication identifies an availability, and if the particular bit has a second bit value that is different from the first bit value, the indication indicates availability The method according to claim 14. A processor;
A memory coupled to the processor, the memory comprising:
In a second device of a data link group of a neighbor aware network (NAN), a first corresponding to a particular service during a particular time period configured for the device of the data link group to operate in an active mode of operation. Receiving a message containing an indication of whether the device is available;
In response to determining that the first device is unavailable during the particular time period, a low power mode of operation during one or more transmission windows corresponding to the particular time period An apparatus for storing instructions executable by the processor to perform an operation comprising:   The operation is further said that when the second device is peered with another device, the other device is unavailable during the specified time period before transitioning to the low power mode of operation. 24. The apparatus of claim 23, comprising determining.   24. The apparatus of claim 23, wherein the message comprises a paging message. The operation is further
In the second device, a first of whether the first device is available during a second specific time period in which the devices of the data link group are configured to operate in the active mode of operation. Receiving a second message including two instructions;
26. performing one or more operations associated with different devices corresponding to different services during one or more transmission windows corresponding to the second particular time period. The device described.   At least a portion of the second specific time period is identified by a plurality of logical channels, each of the plurality of logical channels corresponding to a communication channel and a portion of the second specific time period; 27. The apparatus of claim 26, wherein a message is received during a paging window portion of a transmission window corresponding to a first logical channel included in an index of a logical channel corresponding to the data link group.   28. The apparatus of claim 27, wherein the first logical channel corresponds to a basic communication channel.   28. The apparatus of claim 27, wherein the first logical channel corresponds to an auxiliary communication channel of a plurality of auxiliary communication channels referenced by the index of the logical channel.   30. The apparatus of claim 29, wherein the plurality of logical channels represent communication channels, and wherein the communication channel indication follows the auxiliary communication channel indication at the index of the logical channel.

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